Carbs, fluid, sodium, by the hour.

Race day nutrition fails in the details: the right number of grams, at the right time, from products you have actually trained with. Race Fuel builds that plan from your own numbers.

WHAT IT DOES

• Sweat rate from a weigh-in test, corrected for race-day heat
• Sodium loss per hour from your sweat saltiness (or a measured value)
• Carb targets from your gut training, bike full rate and run at 80%
• Fluid capped at what a gut absorbs, so you replace about 80% of sweat and not more
• Race presets from sprint triathlon to full iron, marathon, half, century, gran fondo and 50 km trail, or custom legs
• Editable product library: gels, chews, bottles as you mix them, salt capsules, bars, cola, aid-station cups
• Auto-fill to the targets, then hand-tune counts per leg with carb, fluid and sodium gauges
• Caffeine budget against your body weight
• Shopping list, a timeline of every intake, and a printable top-tube card with clock times
• Backup and restore

Who it's for

Triathletes, marathoners, gran fondo riders and ultra runners who want a plan on paper before the gun, and their coaches.

What you get

• Race Fuel (one .html file, runs in your browser, offline)
• A 2-page quick-start guide

This is a planning tool, not medical advice. Test every plan in training first.

Good to know

• One file. No install, no account, no subscription, no internet needed after download.
• Your data stays on your computer. Export a backup any time; import it on another machine.
• Built for a computer screen: Windows or Mac, in Chrome, Edge, Safari or Firefox.
• Instant download.

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