Plan your race fuel by time, not distance.
A calibrated engine turns your GPX route, weather, and athlete profile into a minute-by-minute carbohydrate, fluid, sodium, and caffeine plan. Built for road, trail, ultra, and full-distance triathlon athletes.
Supported race types
Road running
Half marathon
Marathon
Trail running
Ultra trail
Sprint triathlon
Olympic triathlon
Half Ironman (70.3)
Full Ironman
Why time-based?
Distance-based fueling ignores what your body actually cares about.
Your gut absorbs carbohydrate in grams per hour, sweats out fluid in ml per hour, and clears sodium and caffeine over time. A 5-kilometer climb takes far longer than a 5-kilometer descent, so a per-kilometer plan systematically underfuels the climb and overfuels the descent.
RaceFuel uses the Minetti energy-cost model plus terrain, weather, and fatigue factors to predict your split time at every route segment, then generates fuel events on the race clock instead of the odometer.