April 7, 2021

What should I eat the night before a long run?

Have you ever been on a run and felt lacking in energy? Dizzy or weak? An urgent need for a bathroom stop? If any of these feelings are familiar, then it sounds like you need some help on what to eat before a run. Importantly, you want to ensure you're eating the right thing the night before a race and remove any risk of hitting the wall during a half marathon or marathon.

When it comes to running, what we eat is important. The “right” food gives us the energy we need to keep going, but the “wrong” foods could cause an upset stomach or make us feel lethargic. So, it’s important to make sure you fuel up correctly before a competitive race - especially if you’re aiming for a PB. In this article, we’ll break down competitive races and suggest what to eat before running them.

General Advice

Before we get into specifics, there are a few things to know about running and food. While runners might think that breakfast matters more than their meal the night before, what you eat the night before a run is absolutely vital because it’ll be your main energy store.

Generally, runners should focus on the four main areas for their pre-race evening meal: carbohydrates, protein, fats and vitamins and minerals. Let’s break them down.

Carbs: Arguably, these are the most important. Stored in the muscles and liver, carbs will help keep your energy high, prevent your blood sugar from dropping and help replenish glycogen levels. Whole grain carbohydrates like brown rice or pasta get the best results.
Protein: Protein intake is important because it reduces the likelihood of injuries by accelerating muscle growth and helping to rebuild muscle fibres. Choose protein that’s low in fat, such as eggs, fish and poultry.
Fats: That being said, a small amount of fat is essential in a healthy diet, and runners need this valuable metabolic fuel for energy. Polyunsaturated fats are best, such as sunflower seeds, fatty fish like mackerel and salmon, and avocados.
Vitamins and minerals: All runners need vitamins and minerals to turn food into energy, maintain bone strength and repair muscle tissue. Get vitamin A from sweet potatoes and kale, and find valuable calcium in milk and spinach.

So, how can you apply each of these food groups to your pre-race evening meal?

What to eat before a 5k race

5K races are great for beginners. They are a short and sweet runs which mean you can really enjoy the whole process. While a 5K running race might not need too much preparation, it’s still important to eat well the night before. We’re talking complex carbohydrates, protein and a little fat to give your body enough energy to perform at it’s best.

Suggestion: Grilled salmon, brown rice and steamed veg such as broccoli or spinach.

What to eat before a 10k race

A 10K race is more challenging, but a great distance for runners who are training for longer races or who enjoy the speed of a 5k run, with that extra challenge. Your pre-10K meal should provide you with plenty of energy for the next day, so think about what you might eat for a 5K and increase the protein and veg. You could also fuel up on carbs gradually in the run up to your race.

Suggestion: Grilled or oven-cooked chicken breast, roasted sweet potatoes and asparagus.

What to eat before a half marathon

Now we're onto the big ones, where what you eat before the run becomes even more important. A half marathon is when running starts to get really challenging. You’ll need to train for a few months and watch your diet throughout the process so your body is well fuelled for longer distances. Your pre-half marathon meal should be carb heavy without overloading. Either of the 5K or 10K meals would do it (but you might want a slightly larger portion), or you could follow in Jessica Ennis-Hill’s footsteps and go for something a tad more interesting like a pasta bake.

What to eat before a marathon

Running a marathon is a huge achievement, and it takes dedication. This doesn’t just mean in terms of training - it also means in terms of your diet. You’ll need to avoid fizzy drinks, fast food and alcohol during training, and eat nutritious dinners during the week in the run up to your race. The evening before, we recommend Mo Farah’s staple meal of pasta, steamed vegetables and grilled chicken. You might also want to bring some running snacks with you on race day such as energy drinks or gummies - but practise with these beforehand as they could upset your stomach.

Tips for pre-race day eating:

#1 - Go light on fibre: Whether you’re running a 5K or a marathon, too much fibre could upset your stomach and cause an unwanted bathroom break.

#2 - You don’t need a carb overload: Yes, carbs are great for runners, but you don’t need to eat them in excess. Watch your portion size so you don’t feel lethargic or sluggish.

#3 - Enjoy your meal: Eating healthily is important before race day, but the chances are you’ll be nervous. Cook something you enjoy and want to eat to help with the nerves.

#4 - Stay hydrated: Hydration is key when it comes to running, no matter the distance. Your evening meal should be accompanied with plenty of water, and go easy on the salt.

#5 - Listen to your gut: What to eat before running can vary - and you know your body better than anyone. If you have any underlying health conditions or intolerances, listen to your gut and go with what you know it can handle.

We'd love to hear what you eat before running or what your special pre-race meal is? Let us know in the comments and feel free to share your recipe!

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The Challenges Women Face in Running and How It Impacts Participation

Running is often lauded as one of the most accessible sports—just lace up your trainers and go. However, for many women, the barriers to participation go far beyond the logistical. While safety concerns are frequently highlighted, deeper systemic issues like access to the sport and unequal treatment are also preventing more women from running. It was a topic keenly discussed at our In Her Stride panel held at the end of November, with key members of the female running community including Sophie Power, Tasha Thompson, Rehana Mawani and Emily Shane.

Before we kick things off however, we should highlight that female participation in running events is growing, and this is a great thing! According to data from Let’s Do This, women in their 20s are the fastest-growing demographic in event participation this year. However despite this, women are still 16% less likely to run every week compared to men. This disparity is particularly striking given that women report higher levels of personal benefits from running, such as improved fitness, better sleep, and reduced stress.

The reasons for this are complex and personal, however we have broken down three key challenges discussed during our panel and the solutions explored that could help address them.

1. The Pressure of Pace

One of the biggest hurdles for many women is the pressure to run faster. Despite the average UK woman’s running speed of 06:37 min/km (according to Strava), most run clubs don’t cater to this with the slowest pace often around 6 minutes per km. Add to this the relentless focus on personal bests and fast times on social media, and it’s no surprise that many women feel too intimidated to join in.

Thankfully, there are starting to be more people rebelling against this speed obsession, including our panelist, Emily Shane. Emily has been leading the charge to encourage more women to disregard pace and focus on the experience of running to drive uptake amongst women. Initiatives like events without cutoff times and more inclusive pace groups at running clubs are vital to creating a more welcoming environment and broadening the benefits of running to the experience and community.

2. Perception of Sport in Schools

One of the topics hotly discussed was how for many girls, the barriers to enjoying physical activity start at school. Puberty, coupled with changing bodies and fluctuating emotions, can make sports feel daunting and uncomfortable for teenage girls. Research highlights this disparity: only 38% of girls enjoy sport and exercise compared to 53% of boys, and just 26% of girls feel confident in physical activity versus 43% of boys.

The panel emphasised the need to address this such as:

Introducing a wider variety of sports and fitness activities to cater to different interests
Providing more supportive and confidence-boosting PE kits.
Showcasing more female role models in sport to inspire young girls.

By addressing these issues at the school level, we can foster a love of sport that lasts into adulthood.

3. Treatment at Events

This is a topic that panelist Sophie Power, founder of SheRACES is incredibly knowledgeable and passionate about. Even at organised running events, women often experience unequal treatment. From “unisex: t-shirts (which are actually designed for men) to a lack of sanitary products in portaloos, these "small things" can collectively make women feel like an afterthought. Prize money inequality and rigid event policies—like no deferral options for pregnant or postpartum women—further highlight these disparities.

Thankfully, initiatives like the 50:50 campaign by Threshold (a campaign to get 50% of women at Ultra startlines vs. the current average of 30%) and the advocacy work of SheRACES are driving change, and there are many amazing event organisers such as Maverick, Threshold, Why We Run and many more, that are working hard to make their events are inclusive as possible for women.

Despite these challenges, the panel and attendees felt overwhelmingly optimistic about the future of running for women and the benefits it brings us. Progress is being made, however we all need to add our voices to the conversation to help more women get into the sport and reap the benefits.

Some Helpful Resources‍

Here are a few helpful resources. This list isn’t exhaustive by any means, however is a good starting point for those looking for inspiration on where to start.

Female friendly events:

Female Only Run Clubs

From Radio to Race Day: Hattie Pearson’s Path to Endurance Event Glory

Hattie Pearson is the type of person who doesn’t just dabble in fitness (or most things…!) She dives in headfirst, often with no hand-holding (except, perhaps, metaphorically). From her first triathlon in 2021 to a series of jaw-dropping endurance feats in 2024, she’s been redefining what’s possible with determination, community, and a big ‘YES’ attitude.

Just say YES

Hattie’s ‘yes’ streak started when a friend and her decided to do a sprint triathlon together. “We had such a great time,” Hattie recalls, “and I was like, I want to do more of this.” That spark quickly turned into a blaze of ambition. By the following year, she was competing in Outlaw triathlons and even signing up for a full-distance Ironman—before completing her first half-distance event. “I didn’t give myself the choice to not carry on,” she says.

The Power of Community

For Hattie, discovering the 10IronWomen network—a group committed to gender parity in triathlons—was a game-changer. “It’s amazing to see a community encouraging women and non-binary folk to show up,” she explains. “Seeing others doing it made me think, I want to be a part of this.” That sense of solidarity and shared purpose has been a recurring theme, whether she’s lacing up for a winter triathlon in the Alps or a grueling ultra-marathon closer to home.

A Year of Big Goals

This year, Hattie set herself a dizzying list of challenges. She swam 500 kilometers (yep, that’s half a million meters!) and tackled a range of events, including a winter triathlon complete with ski touring, the Étape du Tour cycling challenge, and her first ultra-marathon. Each was hard in its own way—whether it was battling snowy trails with crampons or smashing out seven-and-a-half-minute miles for 13.1 miles. But for Hattie, the difficulty is the point. “Every time I achieve something I thought was impossible, I remind myself: I can do hard things.”

Balance and Burnout

With goals that ambitious, fitting it all in can be a challenge. Early mornings help. “I’m one of those people who can get up at 5:00 a.m,” Hattie admits, however it also takes a lot of discipline. With her work on Hits Radio starting later in the day, she carves out time for training, dog walks, and the occasional tantrum over broken goggles. “I’ve definitely had those ‘forgetting-my-swimming-costume’ moments,” she laughs. But her key to staying motivated is simple: keep it fresh and fun. Whether it’s joining her triathlon club for training or trying a completely new event, keeping it fun and different is the secret to staying motivated and on track to reach your goals.

Advice for Aspiring Endurance Athletes

For anyone looking to follow in her footsteps (or strokes), Hattie has this advice:

Be patient. Results don’t come overnight, and the journey is as important as the destination.
Stop comparing. “Your journey is completely your own. Social media only shows the highlights,” she reminds us.
Find your community. Whether it’s a running club, a neighbor for early morning jogs, or an online network, accountability and camaraderie make all the difference.

What’s Next for Hattie?

In 2025, Hattie plans to tackle her first multi-day event, the Monster Triathlon. Admittedly it is as scary as it sounds, kicking off with a 5K swim in Loch Ness, followed by a 1,000-kilometer bike ride to Windsor, and wraps up with a casual 50K run to London(!). Her goals also include more open-water swimming, trail running, and maybe—just maybe—an even bigger endurance challenge. (Though definitely not swimming the English Channel: “No way am I swimming through jellyfish without a wetsuit!”)

Hattie Pearson’s journey is more than a personal triumph. It’s a testament to the power of showing up, saying yes, and proving that with the right mindset, anything is possible. Whether you’re tackling your first 5K or dreaming of an ultra-marathon, Hattie’s story is proof that the finish line is worth the hard miles. And when you cross it? You’ve won your race—medal or not. 🏅

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Make your own electrolyte drink

Why spend on expensive sports drinks when you can make a natural, hydrating electrolyte drink right at home? With just a few simple ingredients, you can create a refreshing blend packed with essential minerals and hydration-boosting properties. Perfect for fueling your workout or post-run recovery, this homemade option keeps it natural, affordable, and effective.

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Ingredients:

1 pinch of high-quality sea salt
Small piece of fresh ginger, peeled
500ml coconut water (e.g., Rebel Kitchen)
Juice of 1 lime
Fresh mint leaves

Instructions:

Prepare Salt & Ginger: Add a pinch of sea salt and the peeled ginger to a blender.
Add Coconut Water & Lime: Pour in the coconut water, squeeze in the lime juice, and add a few mint leaves.
Blend & Serve: Blend until smooth, pour into a glass, and garnish with extra mint. Enjoy your refreshing, hydrating drink!

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