Your Hyrox Race-Day Fuelling Plan, Broken Down By Finish Time

Fuelling advice for Hyrox gets confusing fast, mostly because so much of it is borrowed wholesale from marathon or triathlon nutrition without adjusting for what actually makes Hyrox different: eight stations of near-maximal force output wedged between eight 1km runs, finished by most athletes somewhere between 75 minutes and two-and-a-half hours. Your fuelling plan should be built around your expected finish time, not a generic template. Here's how to build one.

Start the week before, not the morning of

Race-day fuelling starts with what you do in the 24 hours before you step on the start line. Carb-loading isn't just a marathon thing, Hyrox is glycolytically demanding across both the running and the station work, and going in with topped-up glycogen stores gives you a real buffer for the back half of the race. A useful target for the day before racing is around 8g of carbohydrate per kilogram of bodyweight, leaning on easily digested sources: rice, oats, bread, fruit, and a carb-electrolyte drink like MIX+ alongside meals rather than relying on food volume alone.

Race morning

Aim to eat your main pre-race meal 1–4 hours before the start, porridge with banana, toast with jam, rice with a lean protein, that kind of thing. The goal is carbohydrate that digests easily and won't sit heavy through the warm-up. Avoid high-fibre or high-fat foods in this window; they're more likely to cause GI issues once you're moving hard.

In the final hour or two before the start, a small, familiar top-up, a gel, a few chews, or a sports drink, plus fluids with electrolytes helps make sure you're starting the race properly fuelled and hydrated rather than running on the tail end of last night's dinner.

During the race: match carbs to your finish time

This is where the generic "30–60g an hour" advice needs adjusting for how long you'll actually be out there. As a starting framework:

Sub-75 minutes (elite/advanced pace): Carb intake during the race is optional. Your pre-race carb-loading and race morning meal will comfortably cover an effort this short — a small hit of quick carbs is fine but not essential.

75 minutes to two hours (most intermediate athletes): This is the zone where in-race fuelling starts to matter. Aim for roughly 30–60g of carbohydrate per hour, taken as gels, chews, or sips of a carb drink between stations. A single GEL30 or a couple of CEL50 chews spaced across the race covers this comfortably without needing to think about it much.

Two hours plus (beginner/recreational pace): Longer time on your feet means a higher carb requirement to avoid the bonk that tends to show up in rounds six and seven — aim closer to 60–90g per hour. This is where planning matters more: know roughly when you'll pass each water station and have a specific point in the race where you take your next gel or chew, rather than waiting until you feel like you need it.

Timing it around the stations, not just the clock

The practical trick with Hyrox fuelling is that you can't always fuel mid-station, you're not stopping to eat during a sled push. Build your fuelling around the runs instead: take a gel or a few chews in the first 200–300m of a run rather than right before a station, so you're not trying to chew while your heart rate is spiking into a wall ball set. Sipping fluid at the Rox Zone stations as you pass them is far more manageable than trying to carry and drink mid-effort.

Practise the plan, don't invent it on the day

Whatever plan you land on, timing, products, quantities,  rehearse it in training, ideally in a session that mimics race intensity and roughly matches your expected finish time. GI tolerance under load is individual, and the last thing you want is to discover mid-race that a gel you've never tried during hard effort doesn't sit well. Race day should be the most boring, predictable execution of a plan you've already tested, not an experiment.

A worked example

Say you're aiming for a 100-minute finish, solidly in the intermediate bracket. That puts you in the 30–60g-per-hour range, so a realistic plan might look like: a GEL30 in the opening run, a couple of CEL50 chews around the halfway point (after station four), and a final gel or a few more chews heading into the last two rounds if you're feeling the fade coming. Alongside that, small sips of water or an electrolyte drink at every Rox Zone station you pass, rather than one large drink at any single point. None of that requires much thought mid-race if you've decided it in advance, which is exactly the point.

Don't neglect fluids alongside the carbs

Fuelling and hydration aren't separate problems on race day, they're the same plan. A carb drink like MIX+ lets you take on carbohydrate and fluid together, which is often easier to manage than solid gels or chews when your breathing is already elevated from the previous station. Alternating between a carb drink and solid options across the race can also help avoid the GI heaviness that comes from relying on one format the whole way through.

Get the carbs right for your finish-time bracket, time them around the runs rather than the stations, and rehearse it in training and fuelling stops being something you have to think about on the day. It just supports the effort you've already put in.