icon-account icon-glass

Popular Products

The Lean Protein
Whey protein powder for weight-loss.
The Energy Booster
Pre/intra-workout powder with BCAAs.

The Average 5K Time - And How To Get Faster

21st December 2020

21st December 2020

By Shivraj Bassi

A 5km run, often simply known as a ‘5k’ is one of the most popular distances in running and a common first target for those just starting out in the sport. It’s the perfect balance of achievable and challenging, and 5k run events take place year-round all over the world. But what is the average time to run 5k, and how can you improve your pace? Today, we’ll be going over all things 5k, including average times by age, how many calories you can expect to burn while running one, how to fuel your training and how to improve so you run faster and more safely.

What is 5km in miles?

Firstly, let’s consider what running a 5k actually entails. Many of us work in miles and are still more familiar with the imperial system than the metric, so 5km can seem like a random figure. We also tend to pace ourselves in minutes per mile whilst running and it helps to know the conversion. Well, there are around 1.6km to a mile, so 5km equates to about 3.1 miles.

That doesn’t seem like a lot, does it?

Surely a walk into town and back would be less. Well, perhaps, but according to The US Centers for Disease Control and Prevention’s Physical Activity Guidelines for Americans documentation, the average person walks at a pace of between 2.5 and 4 miles per hour. If we take an average of 3mph, that means it would take you just over an hour to walk the distance if we consider a 5km run in miles. Suddenly, that distance seems a bit greater, right?

However, we’re talking about running today, so let’s move on to look at how long you should expect to take to run 5k.

The average 5k run time

The average time to run 5k depends on quite a few factors, including your age, gender, fitness level and running experience. The information in the table below is taken from the International Association of Athletics Federations (IAAF) extensive database, which collates times from all over the world and from runners of all ability levels. It displays the average 5k run time by gender and age from more than 70,000 events that have taken place over the last 50 years.

Age Group

Men

Women

0-20

32:30

40:00

20-29

33:45

39:45

30-39

34:50

40:50

40-49

35:00

42:30

50-59

36:40

45:25

60-69

40:50

49:10

70+

45:00

53:20

 

The average pace per mile for a 5k run is 11:22 for men, and 13:21 for women, which means, across all ages and ability levels, the average 5k run time is 35:20 for men and 41:30 for women.

Running ability level

Running percentiles

The tables below show the percentiles, split by gender, of runners and their 5k times.

Source: Runner’s World

Beginner

Beginner runners are those just starting out and have little to no prior experience. They may have some other training or fitness experience, but this would be minimal. As a male with no running ability, you could expect to finish a 5k between 40 and 46 minutes. Females should aim for between 46 and 53 minutes.

Intermediate

An intermediate runner has been running for a good period and may even already have some race experience. It is likely that they have established a good base fitness level, both with running and other cardiovascular activities. Intermediate athletes commonly engage in other types of training as well, such as a strength or resistance-based programme or sports. The intermediate level is the widest of the 3, with the biggest spread of times. For males, an intermediate 5k time would be anywhere between 25 and 40 minutes. For females, it’s between 28 and 42 minutes.

Advanced

Advanced runners tend to have several years of running experience behind them and are likely to have competed in several races before. They may have other fitness interests, but advanced runners, especially those at the top level, tend to focus on running first and foremost, tailoring their training towards finishing in the fastest times.

To be in the top 10% of male runners, you’d need to be able to run a 5k in around 23 minutes. To hit the top 1%, that goes down to an incredible 17 minutes 30 seconds! It’s a similar story for females, with the top 10% achieving a time of around 28 minutes and the top 1% hitting 21 minutes 39 seconds.

How many calories does a 5k run burn? 

Like so many of the other things discussed in this article, this is dependent on several factors. With calories burnt, the main ones are your age, gender and bodyweight, as well as your lean body mass. These all affect your base metabolic rate (BMR) and the amount of calories you burn during physical activity.

That said, the average person will burn between 400 and 500 calories by doing a 5k run. Do remember though that this is just a ballpark figure, and your calories burnt may vary.

Any fitness trackers you may be using such as an app or watch may also differ from this figure. They have gotten more accurate as technology has developed, but the numbers are never exact!

Training for a 5k

This is probably the part you’ve all been waiting for, so let’s get right to it!

How do you train for a 5k run? There are a number of different methods, and to some extent you need to find what works for you, but there are also several things to strongly consider adding to any 5k run training programme:

Running

Let’s state the obvious… To get better at running, you need to run! If you’re a beginner, you don’t need to start out running long distances straight away, or even running the whole way. If you struggle to keep up a run, you could even try interspersing periods of running with walking. For example, if you’re running along a road with streetlights, try running between 2 lights and then walking between the next 2. As you run more, try to increase the time you’re running versus the time you’re walking. Before long, you’ll be able to keep pace for the entire distance and then begin extending it!

Running also comes in many forms, and it’s a good idea to incorporate a few of them into your training. There are 8 main types:

Base runs

Base runs tend to be short to moderate in length and should be attempted at your natural pace. This shouldn’t be too challenging but should be done frequently. Frequent base runs compound over time, resulting in increases to your aerobic capacity and running efficiency whilst allowing you to work on your technique. These should make up the majority of your weekly running mileage.

Long runs

The definition of a long run is very much dependent on your current endurance level. A beginner’s long run may be an intermediate level base run, for example. That said, a long run should be a sufficient distance to leave you fatigued and it should challenge the limits of your endurance. The main way to progress a long run is, of course, by increasing the distance, but you could also aim to increase the pace you complete the run at or even mix things up by adding intervals.

Recovery runs

The importance of recovery runs can’t be overstated. They allow you to add mileage to your weekly total whilst reducing the risk of injury or reduced performance from being over-fatigued. A recovery run is a shorter distance run at an easy pace that should feel relatively comfortable throughout. Recovery runs are best placed as the next run after a hard training session in your programme. They’ll help you to keep progressing without further fatigue, and by increasing your blood flow you will even aid in your recovery!]

Tempo runs

Also known as a threshold run, tempo runs should be carried out at a sufficiently challenging pace and last for a relatively prolonged period. For less experienced runners this could be around 20 minutes, but advanced athletes should be aiming to push for up to an hour. The name ‘Threshold Run’ comes from the purpose, which is to run at your lactate threshold, or the maximum pace that you can sustain for the aforementioned time periods dependent on your experience level. The aim of the tempo run is twofold: to increase the pace you can run at and to increase the time for which you can sustain that pace. They should include both a warmup and cool down period, with the higher effort portion of the run in the middle.

Progression runs

Progression runs begin at a runner’s natural pace and include a faster segment at the end. The length of this is dependent on your experience level, but this type of run should be fairly challenging. In terms of difficulty and fatigue levels, it should sit somewhere between a base run and a threshold or interval run.

Interval runs

Interval runs are a form of High Intensity Interval Training (HIIT). They incorporate short periods of fast running broken up by periods of lower effort activity. This could be jogging at recovery pace or, for less experienced runners, even a standing rest. Intervals are a great way to get more fast running into your training without completely exhausting yourself and HIIT in general is a highly effective way to improve your overall fitness levels.

Fartlek

Fartlek is a Swedish term meaning ‘speed play’ and is a form of interval running. In practise, this involves a run that incorporates of higher intensity running that vary in speed, duration and distance. The continuous variation makes for a great way to get your body used to running at a range of different intensity levels and Fartlek has consistently proven to be effective at improving both efficiency and pace. These runs can be placed anywhere throughout a training programme and are a fantastic way to mix things up with an alternative to more traditional methods.

Hill repeats

Hill repeats are repeated, short periods of hard running on an uphill incline. They have a myriad of benefits, including improving aerobic power and running strength, fatigue resistance at high intensity, and the part of running we all want to shy away from: pain tolerance!

There’s no question that running at high intensity for an extended period can be quite uncomfortable, and adding hill repeats to your training will help develop your ability to tolerate pain from the exertion of running and your ability to process and clear lactic acid from your muscles. It’s this that causes the burning sensation you’ll often experience when pushing yourself, so hill training really can be invaluable! It’s also a relatively safe way to start introducing higher-intensity workouts into your training.

As you can see, running comes in many forms over a variety of intensities and distances! By introducing a variety of different running types into your training, you give yourself the best chance to improve your pace, technique and overall fitness. This means your 5k time will improve, but so too will your quality of life.

An effective running programme should also include other types of training too. This helps reduce the risk of injury from constantly subjecting your leg muscles and joints to the high impact nature of running, but also keeps varied which will mean you’re more likely to adhere to the programme. These could include:

Other cardiovascular activity

Running isn’t the only way to improve your aerobic capacity. There are many forms of cardio and they all have their own benefits. Try a few out and see what works best for you! From lower impact activities like cycling, either on the road or on a stationary bike, and swimming to higher intensity options such as rowing, there’s plenty of different cardio types to choose from. For runners, a lower impact activity like cycling is a great choice, because this reduces the amount of strain being placed on your joints over a sustained period.

Resistance training

Resistance training can come in a variety of forms and can be done both at home and in the gym. As a general rule, resistance training means moving a part of your body against something resisting that movement, usually in the form of a weight (hence why it’s often called weight training). Bodyweight movements are excellent too and make for a great introduction to this type of training.

For runners, lower body strength is paramount, and this should be the focus, but ensuring your upper body gets a workout too means you’ll continue to develop at a good pace and won’t be held up by lagging body parts. What’s more, this will decrease your risk of injury overall by keeping your whole body strong. Examples exercises that are of particular benefit to runners include squats, lunges and deadlifts. Add these to your training for a fun way to mix things up and reap the benefits in the form of increased pace on the road!

Sports

Sports, whether played solo or as a team, are a fun way to develop your fitness and get comfortable in a competitive environment. Running has synergy with most sports and the two both benefit each other greatly. Many runners also play a sport such as football or rugby and find that their fitness levels are that much better as a result. There’s also a great community spirit, so why not join a local club and get involved?

Foods to incorporate into your diet

When it comes to any form of fitness, training is only part of the equation. Your diet and nutrition are crucial, and knowing how to eat and when will not only allow you to get the most out of your training, it’ll maximise your performance on race day. We’ll give you a few tips on what your diet should include and then provide some advice for the day of your 5k run.

Lean protein

Protein is one of the 3 macronutrients and is responsible for the repair of muscles after training, as well as the growth of new muscle tissue. It helps in the production of red blood cells and aids in injury prevention. Ensuring an adequate supply of protein is important for anyone pursuing a fitness regimen, regardless of discipline. Good sources of protein include fish, poultry and red meat. For vegetarians, tofu, beans, lentils and other pulses make for great choices. Eggs are also a fantastic source of protein, and are in fact the most bioavailable protein available.

Healthy fats

Fat is often demonised but is in fact vital for our survival. It provides an emergency energy store for the body when the food you’ve taken in doesn’t provide enough energy to sustain you, and even protects your vital organs from damage! Fat is a slower releasing energy source than carbohydrates, making it great for sustaining you over longer distances. Examples of healthy fats include olive oil, nuts and avocados.

Carbohydrates

Carbohydrates are the body’s main energy source, so it’s important to make sure you fuel yourself with an adequate amount before any workout! There are many diets which involve the manipulation of carbohydrate timing and amounts, but for the average person ensuring a consistent, regular supply of them in your meals will give you more stable energy levels and allow you to perform better.

Ideally, you want these to be complex carbohydrates, or ones that are broken down slowly and consistently over time for energy. However, simple carbohydrates are great after a run to quickly replenish your energy stores. For complex carbohydrates, look to things such as rice and oats, or even wholegrain bread and pasta. On the simple side, a popular pre and post workout snack is a small helping of sweets (which has the added benefit of satisfying any cravings) or even a powdered supplement such as dextrose.

Another note on carbs: they are stored in your body as glycogen, which is then utilised as fuel. Once the body’s glycogen stores are depleted, it will begin to look for energy from other sources, including stored body fat but in some cases lean tissue. The latter is something we want to avoid, so make sure you keep your glycogen topped up before a long run! As a rough guide, it takes about 500g of carbohydrates to completely replenish your body, and this should last between 60 and 90 minutes of running.

Other foods

Trying to eat whole and unprocessed foods is good advice for anyone, but especially for runners. As well as the above, eating lot of fruit and vegetables is a great choice. Dark green and leafy vegetables are filled with antioxidants and will aid in both your recovery and ongoing health, whereas fruits are filled with vitamins and minerals. For any gaps, consider a few high-quality supplements to help top up your intake (more on this below!)

What to eat before, during and after a 5k

Now that race day has arrived, knowing what to eat can make all the difference between an enjoyable race and a great time or a real struggle. Planning ahead is always beneficial and will remove any stress, so here’s our recommendations for what to eat before, during and after your 5k run:

Before

A couple of hours before the run, try to eat a meal with a good amount of protein and lots of carbs in. A simple meal of chicken and rice will suffice. This gives your body enough time to digest the food and clear your stomach before running, so you won’t feel heavy or bloated during the race. A small piece of fruit an hour before may also help. Bananas are an especially good, carbohydrate rich choice!

During

During your run keeping your energy levels topped up should be your main priority. As a 5k is a relatively short distance, it may be that you don’t need to eat anything, but if you do need to then it should be carbohydrates. Many runners find that carbohydrates gels and tablets are great for this purpose: they’re lightweight and easy to carry and won’t bloat you or make you feel weighed down once you’ve consumed them. It also goes without saying that remaining hydrated is crucial, so be sure to drink some water!

After

After you’ve finished your 5k, you’ll want to focus on replenishing your body’s energy stores to replace what’s been used, as well as hydrating and fuelling yourself with the right nutrients to begin the recovery process. It’s best not to eat a heavy meal right after as you might end up with indigestion issues, though something more substantial a few hours post run is a great way to refuel.

For right after, drink lots of water, get a moderate amount of protein and consume some carbohydrates. You have a few options available here; we’d recommend a protein shake and some fruit; it’ll digest easily and provide everything you need. Another popular choice is chocolate milk. This has the ideal ratio of carbs to protein, along with a little sugar for a fast burst of energy when you need it the most.

Hydration

Hydration is such an important part of not only running, but fitness and life as a whole. So much so that we feel it deserves its own section! Did you know that the human body is made up of around 60% water? It’s part of our skin, muscles, organs and is the main constituent of most of our vital fluids. That alone should be motivation enough to drink more of it!

In terms of how much water to drink, that depends on the person. What is clear is that most of us aren’t drinking enough. In fact, research shows around only 1 in 4 of us are getting an adequate amount each day. The average person should aim to drink at least 2 litres of water per day (that’s around 8 standard sized glasses), though athletes and those undertaking intense physical activity will need a lot more.

Supplementation

Undertaking a fitness regime can be very physically demanding, and training to run a 5k is no different. While you should always aim to get the majority of your calories and nutrients from whole, unprocessed foods, investing in a few high quality supplements can make all the difference. Consider the following:

Protein powder

As one of the 3 core macronutrients, protein is vital for many processes in your body. It builds new repairs existing muscle tissue. A high-quality protein powder can help top up your protein intake, especially if you don’t have a big appetite. It also makes for a tasty snack and can ease cravings. For runners, we recommend our own Fit Protein, which not only contains high-quality protein with a complete amino acid profile, it contains researched backed ingredients designed to give you extra energy and help you push harder.

Multivitamins

Whilst a healthy, complete diet will get you a plentiful supply of vitamins and minerals, the demands of exercise can mean it helps to top those up. Investing in a decent multivitamin means you’ll always have the right micronutrients to maintain a fit, healthy body.

Nootropics and recovery agents

Anything you can do to maximise your recovery will help your training and allow you to push harder more often. Nootropics are cognitive enhancers and aid in mental processing. They also help with wellbeing. Luckily, Innermost have a perfect blend of both in the form of our Recover Capsules. Give them a try today and see the benefits for yourself!

Now get out there and run a 5k!

We really hope that this guide has helped give you a bit more info on running a 5k and how to prepare for one. If you found it useful, please do feel free to give it a share! While you’re here, why not check out our range of world class products? We’re confident that once you try them, you’ll never look back. Happy running, and be sure to let us know how you get on!

Need Expert Advice?

Other Insights

Magnesium for Sleep: Here's What You Need to Know
  Sleep is one of the most important parts of the day. Feeling well, training well and moving through the day with enough energy to actually enjoy it, all rely on a good night’s sleep. Yet for many of us, it is also one of the first things to suffer when life gets busy. Late nights. Early starts. Stress. Screens. Training sessions squeezed into already full days. A mind that seems to become suddenly very active the moment your head hits the pillow. It is no surprise, then, that magnesium has become one of the most talked-about supplements for sleep. It is often linked with relaxation, recovery and the ability to switch off at night. But as with most things in wellness, the real answer is a little more nuanced than “take this and sleep better”. So, does research suggest that magnesium helps with sleep? And how do you know whether it is right for you? Let’s take a closer look. Key takeaways Magnesium supports several normal processes linked with rest, including muscle function, nervous system function and energy metabolism. Magnesium may help some people sleep better, particularly where poor sleep is connected to stress, low magnesium intake, muscle tension or poor recovery. Food should always be the foundation, but magnesium supplements can help support a consistent intake when busy lifestyles, training and irregular meals get in the way. Magnesium works best as part of a broader evening routine, alongside sensible caffeine timing, reduced evening stimulation, good nutrition and proper recovery. What is magnesium and why is it linked to sleep Magnesium is an essential mineral found in food, water and supplements that is involved in over 300 bodily processes. It acts as a mandatory helper molecule (coenzyme) for your cells. Some of the key biological functions of magnesium include: Supports energy production by helping the body convert food into usable cellular energy. Contributes to normal muscle function, including the balance between muscle contraction and relaxation. Supports normal nervous system function by helping regulate nerve signalling and neurotransmitter activity. Contributes to normal bone structure, with a significant proportion of the body’s magnesium stored in bone. Supports normal glucose metabolism, with magnesium involved in blood glucose control and insulin-related processes. While by no means an exhaustive list, this gives a wider sense of how widely it is used throughout the body. Magnesium’s connection with sleep comes from the way it supports systems involved in relaxation and recovery. As highlighted, magnesium helps regulate nerve signalling and muscle contraction, which is one reason it is often associated with calmness, reduced tension and post-training recovery. It is also commonly discussed in relation to GABA (or gamma-aminobutyric acid), a neurotransmitter involved in calming nervous system activity. While the relationship between magnesium and sleep is still being studied, the general theory is that healthy magnesium levels may help the body and brain shift away from a heightened, alert state and towards a more relaxed one. This matters because good sleep rarely begins the moment you get into bed. It starts earlier, as your body and mind begin to downshift. For active, busy people, this can be one of the hardest parts of the day. If your evening routine looks like finishing work, replying to messages, doing a late workout, eating quickly and then expecting your brain to instantly power down, you are asking a lot from your body. Magnesium may support the relaxation side of that process, but it works best when the rest of your routine is helping too. Does magnesium help you sleep? Magnesium may help some people sleep better, but it is not a guaranteed solution for everyone. Its value sits more in supporting the body’s normal relaxation and recovery processes than acting like a direct sleep aid. A 2021 systematic review and meta-analysis published in BMC Complementary Medicine and Therapies looked at oral magnesium supplementation for insomnia in older adults. It found that magnesium may help reduce the time it takes to fall asleep. While the results were promising, the sample size was limited. Magnesium is most likely to be helpful when poor sleep is linked to factors such as low magnesium intake, stress, muscle tension, a busy nervous system or poor recovery. Someone who trains several times a week, works long days and struggles to wind down at night may find it more beneficial for sleep specifically than someone whose sleep issue is caused by an untreated medical condition, severe anxiety, chronic insomnia or an inconsistent sleep schedule. It is also worth remembering that “better sleep” can mean different things to different people. Some people want to fall asleep faster. Others wake up during the night. Some sleep for eight hours but still wake feeling flat.  Magnesium is usually discussed in relation to relaxation and sleep onset, rather than acting as a powerful sleep aid that forces deeper or longer sleep. A helpful way to think about it is this: magnesium supports the conditions that may make good sleep more likely. It does not replace the foundations of sleep itself (many of which we have discussed before). Can You Get Magnesium from Food? Yes, and this is a good place to start. Magnesium is found in a range of everyday foods, including: leafy green vegetables, nuts, seeds, legumes, wholegrains and dark chocolate. Pumpkin seeds, almonds, spinach, black beans and wholegrain products are all useful sources. Food Why it helps Pumpkin seeds Naturally rich in magnesium and easy to add to meals or snacks Almonds and cashews Useful sources of magnesium, healthy fats and plant-based protein Spinach and leafy greens Provide magnesium alongside fibre and other micronutrients Black beans and lentils Support magnesium intake while also adding fibre and slow-release carbohydrates Wholegrains A practical everyday source of magnesium and sustained energy Dark chocolate Contains magnesium, although best enjoyed as part of a balanced diet   A food-first approach also supports the bigger picture. Your body does not experience nutrients in isolation. A diet rich in magnesium-containing foods is often also higher in fibre, plant compounds and other micronutrients that support overall wellbeing. That said, busy lives do not always make consistent nutrition easy. Active people may also pay closer attention to magnesium because of its role in muscle function, energy metabolism and recovery. If you train regularly, sweat heavily, experience muscle tension or find yourself relying on convenience meals during busy weeks, your magnesium intake may be worth looking at. This is where effective supplementation can help, especially when it forms part of a wider routine rather than replacing a balanced diet. Where magnesium supplements can help Food should always be the foundation, but supplements can make magnesium intake easier to manage when life is busy. Rather than trying to rebuild your diet overnight, the right supplement can help you add consistent support around the routines you already have: morning training, post-workout recovery, evening wind-downs, or busy workdays where meals are not always as balanced as you would like. With Innermost, magnesium is included as part of wider, goal-led formulations rather than as a standalone quick fix. The Fit Protein contains 250mg of magnesium per serving, alongside vegan protein, maca, rhodiola root, cocomineral and Pink Himalayan sea salt, making it well suited to active lifestyles where performance, energy and recovery all matter. The Strong Protein contains 200mg of magnesium per serving, alongside protein, casein, creatine monohydrate, Montmorency cherries and bilberries. This makes magnesium part of a broader strength and recovery blend, supporting people who train regularly and want their nutrition to work harder around their goals. For evening recovery, The Recover Capsules are another good supplementation option, with magnesium included as part of a wider recovery-focused formula. This makes them a natural fit for people who want to support recovery at the end of the day, particularly when sleep, training and overall performance are closely connected. When should you take magnesium for sleep? Magnesium works best when it becomes part of a routine you can actually stick to. Because magnesium supports relaxation and recovery rather than acting as a sedative, timing does not need to be overly complicated. The most effective approach is usually the one you can repeat consistently. For many people, magnesium fits naturally into the evening. That might mean taking it with dinner, after training, or as part of a wider wind-down routine before bed. The aim is not to wait until you feel wired and then expect magnesium to force sleep. It is to give your body steady support at the point in the day when you want to start slowing down. This is particularly relevant if your days are busy or training-focused. When your body has been under physical or mental demand, sleep is part of the recovery process. Magnesium can support that bigger picture by contributing to normal muscle function, nervous system function and energy metabolism. Final thoughts: magnesium, sleep and recovery Magnesium has earned its place in the sleep conversation, but it deserves to be understood properly. It is an essential mineral with important roles in muscle function, nervous system function and recovery. For some people, particularly those who are active, stressed, low in magnesium-rich foods or struggling to wind down at night, supplementation may be a useful addition to an evening routine. The key is to keep expectations realistic. Magnesium is not a shortcut to perfect sleep. It is a supportive tool that works best alongside consistent habits: sensible caffeine timing, less evening stimulation, good nutrition, proper recovery and a calm bedtime routine. For Innermost, the bigger point is that form matters, but formulation matters too. Magnesium works best when it fits into a wider routine. That might mean supporting your intake through a recovery-focused product, taking supplements with food, and using them consistently rather than expecting an instant effect. References  Magnesium. National Institute for Health Professionals. Click here. Jewett, E., Sharma, S (2023). Physiology, GABA. National Library of Medicine. Click here. Mah, J., Pitre, T (2021).Oral magnesium supplementation for insomnia in older adults: a Systematic Review & Meta-Analysis. BMC Complementary Medicine and Therapies. Click here. Read more
Fibre
Within the fitness space there can be a tendency to think of fibre as something that’s just functional. Important, of course, but often its impact is only framed around digestion. In reality, fibre plays a far broader role in how your body performs and how you feel day to day, influencing variables like energy stability and appetite regulation through to long-term metabolic health. For anyone already investing in their training, recovery, and overall wellbeing, a high fibre diet matters more than you might think. It’s one of the simplest ways to bring more consistency to your nutrition, without adding complexity. In this guide, we’ll take a closer look at what fibre does, why it matters, and how to build a high fibre diet in a way that fits naturally into your routine. What is fibre and why it matters Fibre is a type of carbohydrate that is naturally sourced from foods like wholegrains, beans, nuts and more. At its core, dietary fibre is the part of plant foods your body can’t fully digest. Rather than being absorbed, it moves through the digestive system, interacting with everything along the way. This process is what makes fibre so valuable. It slows digestion, supports beneficial gut bacteria, and helps regulate how nutrients enter the bloodstream. Over time, these effects compound, influencing energy levels, hunger signals, and metabolic health. It’s worth understanding that fibre isn’t one single thing, and while it is often grouped together, different types have different roles. Broadly, fibre falls into two categories: Soluble fibre: This dissolves in water and forms a gel-like substance, helping to slow digestion and regulate blood sugar and cholesterol. Insoluble fibre: This adds bulk and supports regular movement through the digestive system. Most whole foods contain a combination of both, which is why variety matters more than focusing on a single source. Why intake is often lower than expected You might read this and think you’re easily hitting your daily fibre requirements. Yet, even among people who eat relatively well, fibre intake tends to fall short. In the UK, the recommendation sits at around 30g per day, yet average intake is closer to 18–20g. This isn’t usually down to poor habits. More often, it reflects modern eating patterns: A strong focus on high-protein meals can reduce the variety of plant foods in a diet, lowering fibre intake over time. A reliance on staples like white bread and pasta contain less fibre than wholegrain alternatives, making fibre intake harder to reach. Quick, convenient meals often lack the whole ingredients needed to support adequate fibre intake. The result isn’t a complete absence of fibre, but it does lead to a gradual shortfall below the 30g recommendations. Each meal might seem balanced in isolation, but across a full day or week, intake consistently sits below where it needs to be. The Key Benefits of a High Fibre Diet  A high fibre diet supports several key areas of health at the same time: Gut health and microbiome support As previously mentioned, fibre’s most recognised role is in digestion, but its impact actually goes deeper than that. Certain fibres act as prebiotics, feeding beneficial gut bacteria. These bacteria produce compounds known as short-chain fatty acids (SCFAs), including butyrate, which plays a role in maintaining the integrity of the gut lining and regulating inflammation. A 2019 review published in The Lancet found that higher dietary fibre intake was consistently associated with improved gut health markers and reduced risk of several chronic conditions. The key takeaway wasn’t a single “superfood”, but the cumulative effect of consistent fibre intake over time. There’s also increasing interest in how microbiome diversity influences overall health. A more varied intake of fibre tends to support a more diverse gut environment, which is linked to better resilience and function. For those looking to improve their training routines and hit new PBs, a well-functioning gut is central to recovery. This is because fibre supports the gut environment, which in turn affects how efficiently nutrients are absorbed. More stable energy levels When it comes to your energy, it isn’t just about calorie intake. It’s also key to ensure your body can effectively process these calories. This is where fibre can be highly beneficial. This is because fibre slows the digestion of other carbohydrates, leading to a more gradual release of glucose into the bloodstream. This helps avoid the sharp spikes and dips that can come from highly refined meals. Studies also show that diets higher in fibre are associated with improved glycaemic control, even in otherwise healthy individuals. In practical terms, this often leads to: More consistent energy across the day Fewer mid-afternoon crashes Reduced reliance on quick fixes like sugar or caffeine For those balancing work, training, and recovery, the more stable blood sugar levels provided by fibre mean more consistent energy availability. This can translate into better training sessions, particularly for longer or more demanding workouts. Appetite regulation High fibre foods tend to be more filling due to their volume and slower digestion. At the same time, they influence hormones involved in hunger and fullness, including ghrelin and peptide YY. There’s also a hormonal aspect to this. Fibre-rich foods can influence the release of satiety hormones, helping your body better recognise when it’s full. This creates a more sustainable approach to body composition. Instead of relying on weight loss restriction, your diet supports appetite regulation more naturally. Heart Health and Long-Term Outcomes In addition to the shorter-term health and wellness benefits, fibre intake also has a beneficial impact on long-term health. Soluble fibre, in particular, has been shown to help reduce LDL cholesterol by binding to cholesterol in the digestive system and aiding its removal. Large cohort studies have consistently linked higher fibre intake with a reduced risk of cardiovascular disease and type 2 diabetes. This is partly due to improved blood sugar regulation and partly due to the broader metabolic benefits of a fibre-rich diet. One study in particular by the BMJ found that each additional 7g of fibre per day was associated with a 9% reduction in cardiovascular disease risk. These outcomes aren’t immediate, but they reinforce the role of fibre as a long-term investment in health. High Fibre Diet Foods We’ve written about his previously (see here for our guide on high fibre foods) but in short, building a high fibre lifestyle doesn’t require a complete overhaul of your current diet. It’s instead about increasing variety and making more intentional choices within your existing routine. Below we have outlined some key foods that can help increase fibre intake. Whole grains Oats, brown rice, quinoa, and wholegrain bread provide a steady source of fibre while supporting sustained energy. They’re an easy upgrade from refined grains and tend to be more filling. Fruits and vegetables Eating more fruit and vegetable is one of the simplest ways to raise fibre intake. A useful approach is to focus on variety: Berries and apples for convenience Leafy greens for micronutrient density Root vegetables for more substantial meals Legumes Lentils, chickpeas, and beans are among the most fibre-dense foods available. They also provide plant-based protein, making them particularly useful in meals focused on satiety and recovery. Nuts and Seeds Chia seeds, flaxseeds, and almonds offer a concentrated source of fibre and can be added easily to meals. Even small additions, such as a tablespoon of seeds in a breakfast or smoothie, can make a difference over time. A Smarter Way to Think About Fibre Fibre doesn’t need to be treated as a standalone goal. It works best as part of a balanced, well-structured approach to nutrition - one that supports how you feel day to day, not just how you perform in the odd moment. For most people, that starts with whole foods. Building meals around plant variety, whole grains, and consistent habits. From there, the role of supplementation becomes more effective. The Innermost approach reflects that balance. Products like The Greens Blend can help support daily plant intake and micronutrients, while products such as The Lean Protein fit alongside a diet that prioritises both protein and fibre, rather than one at the expense of the other. Building a high fibre diet isn’t about adding or overhauling, instead It’s about making those small adjustments that bring more consistency to your routine. Over time, those shifts tend to have the biggest impact - not just on digestion, but on how your body feels, performs, and recovers. References Renolds, A., Mann, J., Cummings, J., Winter, N., MDiet, E., Morenga, L. (2019). Carbohydrate quality and human health: a series of systematic reviews and meta-analyses. The Lancet. 393 (10170), 434-445. Click here.  NHS UK. How to get more fibre into your diet. Click here.  Hullings, A., Sinha, R., Liao, L., Freedman, N., Graubard, B., Loftfield, E. (2020). Whole grain and dietary fiber intake and risk of colorectal cancer in the NIH-AARP Diet and Health Study cohort. The American Journal of Clinical Nutrition. 112 (3), 603-612. Click here. Threapleton, D., Greenwood, D., Evans, C., Cleghorn, C., Nykjaer, C., Woodhead, C., Cade, J., Gale, C., Burley, V. (2013). Dietary fibre intake and risk of cardiovascular disease: systematic review and meta-analysis. BMJ.347. Click here. Read more