The FitFileLab blog
Practical guides to open, convert, repair and manage your GPX, FIT and TCX activity files.
- Formats
GPX vs TCX vs FIT: the differences and which format to choose
GPX, TCX or FIT: what each activity file format is for, what they contain, and which one to choose depending on your watch, app or need.
Read article → - Conversion
How to convert a FIT file to GPX for free (no upload, no sign-up)
Convert a Garmin, Wahoo or Coros FIT file to GPX in seconds, right in your browser. Free, instant, and your file never leaves your device.
Read article → - Training
What's a good running pace? Average pace by distance and level
Average running paces for 5K, 10K, half marathon and marathon, by level — and how to find the pace that's right for you, with a free calculator.
Read article → - Training
Marathon pace: how to choose it — and hold it for 42.2 km
How to pick a realistic marathon pace from your recent races, why even pacing beats heroics, and the exact splits for every goal from 3h00 to 5h00.
Read article → - Conversion
How to convert a GPX to TCX: the complete guide (free, no sign-up)
Why and how to convert a GPX file to TCX. Free, instant conversion in your browser, no upload, for Garmin, Strava, Wahoo and Coros.
Read article → - Formats
How to open a .FIT file easily (no software needed)
A .FIT file won't open like a GPX or a PDF. Here's how to read, view and convert a Garmin, Wahoo or Coros FIT file right in your browser.
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