How it works

Strategy first. Products second.

Most fueling calculators tell you how much carbohydrate you need. FuelFit helps you decide what to actually use, when to take it and how to prove it works before race day.

The chain
  1. 01
    Runner

    Experience, stomach history, preferences.

  2. 02
    Race

    Distance, target finish time, expected conditions.

  3. 03
    Physiological target range

    A carbohydrate and fluid range — never one false-precision number.

  4. 04
    Personal experience

    Your current tolerance caps how far the target moves this race.

  5. 05
    Fueling strategies

    Three sensible ways to hit the same target.

  6. 06
    Product matching

    Only now do we search the catalogue.

  7. 07
    Training test

    Three sessions to prove it works on you.

  8. 08
    Learned fueling profile

    Which makes the next race plan sharper.

Responsible by design

Ranges, not decimals

Carbohydrate, fluid and sodium are shown as ranges with a confidence level. Without a sweat test, sodium stays low confidence.

No unsafe jumps

If your current tolerance is well below the theoretical target, we cap the race number and show the long-term potential separately.

Caffeine with care

Doses stay in sensible ranges and are reserved for late in the race. Never trial a high dose for the first time on race day.

Build my plan