HYROX, Fuelled/Part 3

Race-Day
Fuel

HYROX is too short for marathon fueling and too long to wing it on a pre-workout. The right plan is small, calm, and rehearsed: carbs when they help, electrolytes matched to sweat, and no panic drinking.

01 - The 60-110 minute problem

This is not a four-hour fuel story.

A typical HYROX race sits somewhere between a hard threshold run and a strength-endurance test. The runs keep pulling on aerobic energy; the sled, lunges, burpees, and wall balls add hard spikes. That means you need enough carbohydrate to stay sharp, but not so much that your stomach becomes the ninth station.

HYROX fuel is a top-up plan. Eat enough before the start, carry a small amount during the race, and protect hydration from becoming a guessing game.

02 - Build the plan

Your race-day fuel planner

Use your real target finish time. Treat the plan as a starting point, then test it during hard sessions before Delhi or Mumbai.

Your race

min
kg
ml/hr
Race fuel target
45 g/hr
Based on a 100 min race. Try this in hard training before you use it on race day.
Pre-race meal120-160 g carb
During2 gels
Pack3 gels
Fluid500-750 ml
What to do with this

Carry salt with your fluid. Do not use plain water alone. Drink to stay steady, not to force the bottle down.

Night before

Eat a normal carb-rich dinner. Keep it familiar. Do not test a new gel, drink, or tablet.

Breakfast, 2-3 hours out

Eat 120-160 g carbs from foods you know sit well.

T-60 to T-90

If you do not know your sweat rate, use a normal electrolyte drink. Check your sweat rate after your next hard session.

T-30

Take a small carb top-up only if you have used it in training. Use caffeine only if it is already normal for you.

During

Aim for about 45 g carbs per hour. Use about 2 gels. Pack 3 if gels are your only carb source. Carry 500-750 ml with electrolytes.

After

Weigh in before and after a hard session. Use that to set your refill number.

Gels

C30 Energy Gel89/100 CleanLabel° read

30 g carbohydrate, 2:1, 200 mg sodium; isotonic (no water needed)

PF 30 Gel86/100 CleanLabel° read

30 g carbohydrate, 2:1 malto:fructose; carb stated on front

Gel 10084/100 CleanLabel° read

25 g carbohydrate, ~100 kcal; hydrogel; 6 ingredients; no colours/flavours/preservatives

Electrolytes

Reload (Lime Lemon)82/100 CleanLabel° read

5 electrolytes per tab: Na 180, K 77, Cl, Mg 20, Ca + Vit C/B12; 2:1 carb; low sugar; hypotonic

Reload Zero (Ice Current)78/100 CleanLabel° read

Zero-sugar electrolyte effervescent

Electrolyte Salt Caps76/100 CleanLabel° read

Electrolyte salt capsules; 100 caps; 132 g pack

Magnesium

Magnimax75/100 CleanLabel° read

Triple magnesium (bisglycinate, citrate, aspartate) + L-glycine, L-theanine, zinc; 6-in-1; stick packs

Chelated Magnesium Glycinate75/100 CleanLabel° read

~340 mg elemental magnesium from ~2040 mg glycinate per 2-tab serving; chelated

Race-day rules

Nothing new on race day. Do not drink just to match sweat loss. Too much water can be dangerous. These are estimates for healthy adults. If you have a medical condition or a past heat issue, work with a sports doctor or dietitian.

03 - Before the gun

Most fuel happens before you enter the tunnel.

For most athletes, the useful pre-race meal is about 1.5-2 g carbohydrate per kilogram of bodyweight, eaten early enough that it is not sitting heavily in the stomach. For an 80 kg athlete, that is roughly 120-160 g carbohydrate: familiar breakfast foods, low drama, no new fibre bomb.

The night before should look boring in the best way: enough carbs, normal salt, normal protein, and a meal you already know. Race week is not the moment to discover whether a new gel, magnesium tablet, or pre-workout agrees with you.

04 - During the race

Use carbs when the clock justifies them.

HYROX carb bands by finish time
Finish timeCarb targetPractical read
Under 60 min0 g/hrStart fed; do not force mid-race fuel.
60-90 minAbout 30 g/hrOne gel or a small bottle strategy can be enough.
90-110 minAbout 45 g/hrUsually two gels in practice; pack a third if needed.
110+ minAbout 60 g/hrPractice timing and make sure your stomach agrees.
Gels and race carbs
ProductCleanLabel° readWhy it is herePrice snapshot
C30 Energy Gel
NEVERSECOND
Shop / source
89/100 CleanLabel° read30 g carbohydrate, 2:1, 200 mg sodium; isotonic (no water needed)INR 3500
PF 30 Gel
Precision Fuel & Hydration
86/100 CleanLabel° read30 g carbohydrate, 2:1 malto:fructose; carb stated on frontINR 997
Gel 100
Maurten
84/100 CleanLabel° read25 g carbohydrate, ~100 kcal; hydrogel; 6 ingredients; no colours/flavours/preservativesINR 313
Gel 100
Unived
Shop / source
78/100 CleanLabel° read25-26 g carbohydrate, ~100-110 kcal; beta-alanine + Sustamine; water-based; vegan; WADA-freeINR 585
PRO x HYROX The Energy Gel (Guava)
Myprotein
Shop / source
74/100 CleanLabel° read30 g carbs with electrolytes and B vitamins; Guava flavour; endurance energy for high-intensity trainingINR 7781
Energy Gel (Chocolate Bourbon Caffeinated)
Fast&Up
Shop / source
71/100 CleanLabel° readCaffeinated Chocolate Bourbon energy gel; instant energy boost; endurance and performance positioningINR 600
Energy Gel (Mixed Fruit)
GU Energy
Shop / source
68/100 CleanLabel° read~22 g carbohydrate, 2:1 malto:fructose; caffeinated options; mixed packINR 8900

05 - Fluids and sodium

Replace enough. Not everything.

Delhi in July and Mumbai in September are indoor events, but warm-up areas, humidity, nerves, and repeated high-output stations still produce real sweat loss. The useful target is not "drink as much as you sweat." It is to avoid a large gap while staying inside gut comfort and keeping sodium in the plan.

Electrolyte options
ProductCleanLabel° readWhy it is herePrice snapshot
Reload (Lime Lemon)
Fast&Up
82/100 CleanLabel° read5 electrolytes per tab: Na 180, K 77, Cl, Mg 20, Ca + Vit C/B12; 2:1 carb; low sugar; hypotonicINR 112
Reload Zero (Ice Current)
Fast&Up
78/100 CleanLabel° readZero-sugar electrolyte effervescentINR 247
Electrolyte Salt Caps
Unived
Shop / source
76/100 CleanLabel° readElectrolyte salt capsules; 100 caps; 132 g packINR 810
Recharge Electrolyte Mix
LMNT
71/100 CleanLabel° read1000 mg sodium, 200 mg potassium, 60 mg magnesium; zero sugarCheck current price
Supply6 Salts
Supply6
Shop / source
60/100 CleanLabel° readHydration salts product for electrolyte support; final SKU details stored from linked listingINR 430

06 - The ORS label trap

ORS is not automatically a sports drink.

WHO-formula ORS is built for clinical rehydration, especially fluid loss from illness. That does not make it the best during-exercise fuel for HYROX. It can be sodium-heavy, light on race carbs, and easy to confuse with ready-to-drink products that borrow the ORS language without matching the formula.

ContextElectrorush Orange ORS Ready-to-Drink

Final Amazon-linked price snapshot: INR 940 for pack of 30

Orange ORS ready-to-drink electrolyte beverage; 200 ml bottles; sodium, potassium and dextrose; no caffeineShop / source

07 - Magnesium and cramps

The form matters more than the claim.

Cramps in HYROX are usually a fatigue, pacing, heat, and sodium problem first. Magnesium is not a magic brake for wall balls. If you use it, the label still matters: glycinate, bisglycinate, and citrate are more defensible than oxide when absorption is the point.

The current Fast&Up pick here is Magnimax, which uses more defensible magnesium forms than basic oxide. Still, treat magnesium as support, not a cramp cure.

Magnesium options
ProductCleanLabel° readWhy it is herePrice snapshot
Magnimax
Fast&Up
Shop / source
75/100 CleanLabel° readTriple magnesium (bisglycinate, citrate, aspartate) + L-glycine, L-theanine, zinc; 6-in-1; stick packsINR 250
Chelated Magnesium Glycinate
Carbamide Forte
75/100 CleanLabel° read~340 mg elemental magnesium from ~2040 mg glycinate per 2-tab serving; chelatedINR 697

08 - The simple race-week rule

Rehearse the boring plan.

The final plan should fit on one note: familiar carb meal, rehearsed gel timing, electrolyte bottle, no new products, and a post-race refill with sodium and normal food. If your sweat rate is still a guess, start with the sweat-rate calculator, then come back to the fuel planner.

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