HYROX Nutrition: How to Fuel on Race Day
HYROX is a uniquely demanding sport that sits somewhere between endurance racing and high-intensity functional fitness. Unlike a traditional 8 km run, a HYROX race requires athletes to repeatedly switch between running and demanding functional stations. The result is a race that challenges both aerobic endurance and muscular strength. Having a proper nutrition plan will help make your next HYROX a successful one, despite the intensity of the event. With HYROX Toronto just next week, it’s important you go into your race day with a nutrition plan.
A standard 8 km run may not require an athlete to consume carbohydrates during the race, but HYROX is different. The repeated combination of running and high-intensity stations can rapidly increase energy demands and contribute to glycogen store depletion. An athlete who begins the race adequately fueled is better positioned to maintain their pace and performance throughout the later runs and stations, while an under-fueled athlete may begin to notice fatigue surprisingly early, potentially after the sled stations, only three stations into the race.
Your nutrition strategy will depend somewhat on your race start time. Whether you are racing first thing in the morning, in the afternoon, or later in the evening, the goal is the same, arrive at the start line well hydrated, adequately fueled, and with a stomach that feels comfortable.
Morning Start Time
Early morning HYROX races can make pre-race fueling challenging. It’s recommended to have your pre-race meal approximately 3-4 hours before your start time. But if your race starts at 8:00 am, waking up at 4:00 am to eat a full meal may leave you more tired than necessary. Instead, aim to wake up and eat at least two hours before your race, choosing a smaller, carbohydrate-rich meal that is easy to digest. Good options include:
A small bowl of oatmeal with honey
White toast with jam or honey
A banana and carbohydrate-based smoothie
Because you have less time to eat before an early race, your meal will likely be smaller than the meal you would eat before a later race. The priority is to provide readily available carbohydrates without leaving you feeling overly full.
If you feel like you need an additional top-up before the start, choose a small amount of easily digestible carbs close to the race start, about 30-60 minutes
A banana
A few sips of a sports drink
An energy chew
A small amount of another familiar carbohydrate source
For an early morning race, your dinner the night before becomes particularly important because there is less time to eat a substantial meal on race morning. Aim for a carbohydrate-rich dinner that is relatively low in fibre and fat. A simple bowl of pasta with a light tomato sauce and a lean protein is one example. The goal is to enter race morning with carbohydrate stores well supported without causing GI discomfort.
Afternoon Start Time
An afternoon HYROX race gives you more opportunities to fuel throughout the day. Instead of trying to fit everything into one pre-race meal, you can spread your intake across breakfast, your main pre-race meal, and a small carbohydrate top-up closer to the start.
For a 1:00 p.m. race, start with a normal breakfast around 7:00-7:30 am. Choose familiar foods that you know you tolerate well that are lower in fibre and fat. For example:
Eggs, toast with jam, and fruit
Oatmeal with banana and honey
Toast with nut butter and fruit
Your main pre-race meal should be approximately 3-4 hours before the race, putting it around 9:00-10:00 am. This could include:
Rice with a small portion of chicken
Pasta with a light tomato sauce
Pancakes with maple syrup and fruit
Toast with nut butter, fruit, and an egg
Keep this meal relatively high in carbohydrate while keeping fiber and fat moderate to low. Large amounts of fat and fibre immediately before intense exercise can slow digestion and increase the likelihood of GI disruptions.
Closer to the race, a small carbohydrate snack can provide an additional top-up without making you feel overly full. Around 11:30 am.-12:00 pm., you could have:
A banana
A rice cake with honey
A small amount of sports drink
If you prefer to use a gel, taking one shortly before the start can also provide a quick source of carbs.
Night Start Time
A later HYROX race requires a slightly different approach. Rather than trying to eat a large meal immediately before the race, focus on consistently fueling throughout the day. Aim for three good-sized meals throughout the day, with your final substantial meal approximately 3-4 hours before the race. For example, if your race starts at 7:00 pm, aim to have your last main meal around 3:00-4:00 pm. This meal should emphasize carbs while remaining relatively low in fibre and fat to support comfortable digestion.
Your meals throughout the day could include familiar carb sources such as rice, pasta, potatoes, bread, oats, cereal, fruit, or pancakes. Include moderate amounts of protein while avoiding unusually large or heavy meals. As the race approaches, use smaller carbohydrate-based snacks or drinks if needed rather than trying to squeeze in another large meal. The key is to arrive at the start line fueled, but not overly full.
During the Race: Carbohydrates Can Make a Difference
One of the biggest differences between HYROX and a typical 8 km run is the intensity of the event. You are not simply running continuously for 8 km. You are repeatedly interrupting your running with demanding stations that place a substantial energy demand on your body. For this reason, carbs during the race can be useful. A practical strategy is to consume an energy gel or carbohydrate chew around stations 3-4, then consider another serving around stations 6-7 if needed. Taking your carbohydrate during the Roxzone can be particularly convenient because you can consume it while transitioning between stations. You do not necessarily need to wait until you feel exhausted before taking carbohydrates. The goal is to provide your body with carbohydrate before fatigue becomes a major problem. As with any race nutrition strategy, practice during training. Race day is not the time to discover that a particular gel, chew, or sports drink does not agree with your stomach.
Hydration is important, but more is not necessarily better. Start hydrating consistently throughout the day before your race rather than trying to drink a large amount immediately beforehand. Sip water and electrolytes consistently in the hours leading up to the race rather than chugging large amounts at once. During the race, take advantage of the water stations, but keep your intake to small sips rather than drinking a large volume all at once. This can help reduce the chance of feeling overly full or uncomfortable while running and completing the stations.
Post-Race Recovery
Crossing the finish line is not the end of your nutrition strategy. HYROX places significant demands on your carb stores and muscles, making recovery nutrition an important part of the post-race process. Start rehydrating immediately after finishing. Water and electrolytes can help replace fluids lost during the race.
You should also aim to consume carbs and protein within approximately two hours after finishing. Carbohydrate helps replenish glycogen stores, while protein provides amino acids needed to support muscle repair and recovery. A proper meal within 1-2 hours of finishing could include a combination of carbohydrate-rich foods and a source of protein. For example:
Rice, chicken, and vegetables
Pasta with lean protein
A burrito bowl with rice, beans, and chicken
A sandwich with fruit and yogurt
A recovery smoothie with carbohydrate-rich fruit and a protein source
Recovery also does not stop once you’ve eaten your first post-race meal. Continue emphasizing carbohydrate and protein rich meals for the remainder of race day and over the following 48 hours. Continue drinking fluids throughout this period as well, particularly if you finished the race significantly dehydrated.
My Personal Experience
When I raced my first HYROX race this past year at HYROX Ottawa, I had a race at 5:30pm. Here is when and what I ate to prepare:
7:00AM BREAKFAST: Protein oatmeal with banana, peanut butter and a lot of maple syrup. Hydrated with water and a coffee
10:00AM: Maurten energy bar and sipped on a gatorade
11:30AM LUNCH: Pesto pasta with chicken
2:30PM PRE-RACE MEAL: Bagel with Jam
5:00PM PRE-RACE GEL: Caffeinated gel