Upload a race file, set your cadence comfort zone and drivetrain, and find the chainring that keeps you spinning happily on both the steepest climb and the fastest section.
1 Race file
Drop a .FIT or .GPX file here
…or click to browse. Use the raw .fit from your Garmin, or a .gpx exported from Strava.
Slowest 2-min speed ⓘ
km/h
Fastest 5-min speed ⓘ
km/h
These two numbers drive the recommendation — tweak them if you want extra margin.
2 Cadence comfort zone
Below this you're grinding. Hit on the steepest part.
Above this you're spun out. Hit on the fastest part.
3 Bike setup
700c and 29″ are the same effective diameter.
⚙️ Recommendation
1× (single chainring)
—
2× (double chainring)
—
Chainring candidates (1×)
Chainring
Climb cadence easiest gear @ slow
Sprint cadence hardest gear @ fast
Verdict
Gear chart
⏱️ Time in each gear · holding 80 rpm
Want your whole setup & training dialed?
I'm a cycling coach — gearing is just the start. Let's make you faster.