Frequently asked questions

Endurance cyclists and runners — and the coaches who plan for them. You upload a route, set your targets, and get a fuel plan mapped to the terrain and timing of that specific race.

Yes — free, forever, no subscription and no paywall. Creating and printing a plan needs no account. If it saved you time, there's an optional "buy me a coffee" link, but nothing is gated behind it.

No. You can upload a route, build a plan, print it and share a link without signing in. An account only adds saving your plans so you can reach them from any device.

Cycling and running. Each uses its own time model — cycling from your FTP and a power-balance model, running from your flat pace scaled by the Minetti cost-of-gradient curve. Triathlon isn't supported yet.

GPX, TCX and FIT files, plus route XML. Export the route from Strava, Komoot, Garmin, RideWithGPS or your head unit and drop it in — parsing happens in your browser.

From published sports-nutrition research: carbohydrate 60/90/120 g/h tiers, fluid scaled to sweat losses and temperature, sodium ~0.8 g per litre, caffeine 3–6 mg/kg. The full method and citations are on the Science page.

No. OnCourse Fueling gives educational estimates from population averages — not individual medical or dietary advice. Everyone's gut, sweat and tolerance differ. Rehearse your plan in training, and consult a qualified sports dietitian or doctor before relying on it, especially with any health condition.

A rough starting estimate placed from your conditions — a draft to adjust, not a prescription. You can also build the plan yourself by clicking the elevation profile, and edit anything auto-fill suggests.

Pick a format (top-tube strip, handlebar card or A4 coach sheet) and use Print or save as PDF. Sizes are exact millimetres, so a 50 mm sticker prints at 50 mm — cut, fold and laminate.

"Create share link" encodes the whole plan into the URL — no account, no server. Share it read-only (a view-only card) or editable (the recipient can open and tweak it).

Yes. The editor, plan and print preview are responsive, and there's a light and dark theme. On a phone you tap the elevation profile to place fuel instead of dragging.