GPX guides
Practical, no-nonsense guides to fixing and editing your GPX files.
How to edit a GPX file
The plain-English overview: open, edit points, reduce, fix errors, change the time, download.
How to reduce GPX points for a Garmin device
Cut a dense track down to your device’s course limit without losing the route’s shape.
GPX point limits by device
How many points Garmin, Wahoo, Coros, Suunto and Polar allow — and how to fit yours.
How to re-upload an edited activity to Strava
Get past Strava’s “duplicate activity” error by making your edited GPX look like a new file.
How to upload a GPX route to your Garmin
Two ways to get a route onto a Garmin — and why one that won’t load is usually too many points.
How to create a running route
Plan a route on the map — loops, out-and-backs, elevation — and export a GPX for your watch.
GPX vs TCX vs FIT: what’s the difference?
What each format stores, which devices use them, and how to convert between them free.