Open to everyone, with maps
Registration is open — no invite code. Upload a GPX file and get your route on a map, per-kilometre splits, elevation and a VO2max estimate.
Calcpace has been invite-only since the training log went in. That ends today: anyone can create an account.
Bring your runs with you
Export a GPX file from your watch — Garmin, Coros, Suunto, Strava, they all do it — and drop it into a new activity. Calcpace reads the file and works out the distance from the GPS trace itself, the elevation you actually climbed, and your split for every kilometre. The route appears on a map underneath.
The map is drawn with OpenStreetMap: no API key, no usage limits, nothing to sign up for.
A VO2max estimate you can argue with
Log a race result and Calcpace estimates your VO2max from it using the Daniels and Gilbert formula, with a fitness classification alongside. It is an estimate derived from one performance, not a lab test, and the guide page says so and shows the working rather than presenting a number as a verdict.
Your page, your rules
Every account gets a page at calcpace.app/your-username: photo, bio, city, and the runs you have chosen to show. Each activity carries its own public switch. Flip it on and the run appears on your page; flip it off and it is gone again immediately. Nothing is shared because you did not notice a setting.
And a second opinion on race day
The race predictor grew the Cameron formula alongside Riegel. Predicting a marathon from a 5K is a long extrapolation, and two formulas that disagree tell you more about the risk in that goal time than one formula that sounds confident.