GPX is text-based and widely shareable — perfect for routes. FIT is Garmin's binary format for recorded activities with rich sensor data, but harder to open outside Garmin ecosystem.
Rule of thumb
- Share a planned route → export GPX
- Archive a recorded ride with power/HR → FIT
- Preview before a group ride → GPX in GPX Viewer
Open GPX in GPX Viewer. Import GPX to Garmin.
Try GPX Viewer free
View and share GPX routes with GPX Viewer on mobile.
