Everything CrossFit athletes need to know before their first (or next) HYROX.
You've done the benchmark workouts. You've suffered through long chippers and heavy met-cons. You know what hard feels like. But HYROX isn't just a tough workout — it's a 60–90 minute race that hammers both your aerobic engine and your anaerobic power systems simultaneously. And if you don't fuel for it, your body will make that very clear around Station 4.
Here’s what actually works.
Nutrition for HYROX
THE PROBLEM
CrossFit trained you to go hard. HYROX will drain you.
In a typical CrossFit workout, you’re running on stored glycogen for 10–20 minutes, then you’re done. HYROX is different. The combination of eight 1km runs and eight functional stations — ski erg, sled push, burpee broad jumps, wall balls — rapidly depletes your glycogen stores over the full duration of the race. Run out of fuel and you will hit the wall. Hard.
THE FIX
Fuel carbohydrates before and during the race to keep stored energy (glycogen) topped up and blood glucose stable throughout.
HYROX RACE WEEK NUTRITION PROTOCOL
The 72-hour fueling window
Start three days out. This is when you carb-load and hydrate — not the morning of.
72 HRS BEFORE
Prime your hydration. Aim for 3–4L of water with 2,000–3,500mg sodium daily — focus on electrolyte mixes, not just volume. Hydration is about retention. Keep carbs normal, limit alcohol and excess caffeine.
48 HRS BEFORE
Increase carb intake to ~4g per lb of bodyweight per day. A 175lb athlete targets ~700g carbs. Continue sodium-rich hydration. Reduce training intensity.
3 HRS BEFORE
Final meal: high in easily digestible carbs (rice, pasta, potatoes), moderate protein and fat. Drink 500ml water with electrolytes.
30 MINS BEFORE
Another glass of water with a sodium electrolyte mix. Caffeine if you use it — 100–200mg is the effective research-backed range.
10 MINS BEFORE START
Take your first gel. Use a low-glycemic option here to avoid a spike-and-crash before your adrenaline kicks in.
NUTRITION DURING YOUR HYROX RACE
Two gels. Simple.
Here’s your race-day plan — one gel before the gun, one after the row:
GEL (pre-race)
Run 1 → Ski → Run 2
Sled Push → Run 3
Sled Pull → Run 4 → Burpees → Run 5
Row
GEL (after Row)
Run 6 → Farmer Carry → Run 7
Lunges → Run 8 → Wall Balls
Tip: train your gut now. Start with one gel per hour in long training sessions, gradually working up past your race-day amount. If you plan to take 60g during the race, train your gut to handle 80g so you have buffer.
THE SCIENCE, QUICK VERSION
Why gel quality matters
Not all gels are the same. Simple glucose gels spike blood sugar fast — great mid-race when adrenaline mutes insulin, but risky right before the gun. Look for gels that combine:
2x
Absorption pathways via dual-carb (glucose + fructose) fueling
Low GI
Steady energy release, no spike-and-crash before the start
+Na
Electrolytes to prevent the cramps that end races
Everyday Athlete makes fuel gels built specifically for HYROX — low-glycemic palatinose, dual-carb absorption, electrolytes, and 75mg caffeine for pre- and mid-race boosts. Try them in your next long training session before race day.