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What this format is
TCX is Garmin’s older XML format. It holds laps, heart rate, and cadence well. GPX is what most maps and Komoot expect.
How to get the file
- From Garmin Connect
- 1. Activity → ⋯ → Export as TCX.
- 2. Drop the .tcx file here.
- From Strava
- 1. Activity → wrench → Export TCX, then drop it here if you need GPX instead.
What is kept and what is lost
| Kept | Lost or missing |
|---|---|
| Track, elevation, time, heart rate, cadence, power (from TPX watts) | Lap splits as separate laps — they flatten into one GPX track |