50FiveStar
Gels
The
right
gel
right
gel
changes
the race!
the race!
Free · no sign-up · results shareable by link
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Race fuel,
priced honestly.
priced honestly.
Stop overpaying for race fuel.
Compare gels by cost per gram of carbohydrate and calculate your own DIY race mix for marathon, half marathon, HYROX and long training — with editable prices that work in any currency.
Open the calculator →What
you get
1
Money, made concrete
Cost per gram of carbohydrate, plus what a 12-week training block really costs you in gels versus DIY mix.
2
Buy, make — or both
DIY mixes compared directly against commercial gels, instead of only spitting out a recipe.
3
An honest gut-load estimate
A concentration warning presented as an estimate, not a lab reading — with clear guidance on what to sip and what to chase with water.
Get
fueling
Same rule as the calculator: numbers you can check, estimates labelled as estimates, and nothing that reads like a brochure.