Bonking isn't a fitness problem.
It's a fuelling problem.
The truefuels system is built for long rides, sportives and the
moments where your legs want to stop but your race doesn't.
Informed Sport certified · Built by Alistair Brownlee · 4.86★ (200+ reviews)
60–90% of endurance athletes underfuel.
The wall, cramp and overheating are fuelling failures — not fitness failures.
Hitting the Wall
Most cyclists ride on 30–40g of carbs per hour. Race science puts the target at 60–90g. That gap doesn't show until hour three — then it shows all at once...
Energy Gels
40g of fast carbohydrates per gel — start at 40–60g carbs/hr in training, build gradually, arrive at race day absorbing 80–90g/hr without GI distress.
Shop NowCramps
Leg cramps on the third climb. Four to six hours in the saddle depletes sodium and potassium faster than most riders replace — water alone doesn't close that gap...
Electrolytes
390mg of sodium per sachet — matched to what your body actually loses in sweat, not inflated. Your hydration stays on track, from the first climb to the final descent.
Shop NowHeat
Summer sportives in Spain, France, or warm UK conditions — core temperature builds from the first pedal stroke. By the time you feel it, performance is already dropping...
CoreCtrl
4,000mg of L-Taurine per sachet — taken daily for 8 days before your event to help your body handle heat under load. Stay in control when the conditions turn against you.
Shop NowYour Race Fuelling Calculator
Enter your race details and get a personalised gel and electrolyte plan.
Products & Bundles
Start with a bundle or build your own stack. Bundles save you vs buying separately.
RACE READY SYSTEM
40× Energy Gels + 20× Electrolyte sachets + 8× CoreCtrl sachets + FREE truefuels bottle
TRAINING BUNDLE
20× Energy Gels (mixed low + high salt) + 20× Electrolyte sachets
Gel — Low Salt (0.25g)
40g carbs · 0.25g salt · cool rides · training
Gel — High Salt (1g)
40g carbs · 1g salt · summer rides · 4h+ efforts · heavy sweaters
Electrolytes
400mg sodium · 150mg potassium · 25mg magnesium
CoreCtrl™
4,000mg taurine · heat management · summer sportives
Frequently Asked Questions
At 60–100g carbs/hour over 4 hours: 8–10 gels (40g each). Use the calculator with your exact duration.
Start at 45–60 minutes. Take a gel every 30–45 minutes. On the bike you can eat more easily than running — don't wait until tired.
High-carb dual-transport gels — the same 1:1 glucose:fructose ratio that truefuels gels are built on. Up to 90g absorption per hour vs 60g from glucose alone.
Train for a different sport?