Join split activities
You pressed save at the café, or the device restarted halfway, and one outing became two recordings. Add the pieces here and download them as a single activity.
all .fit or all .gpx; drop them here in any order
What happens to your data
| In the joined file | |
|---|---|
| Order | By recorded start time. The order you add files in does not matter. |
| Records | Kept exactly as the device wrote them: position, heart rate, power, cadence, temperature. |
| Distance | Continues across each join, so the second part starts where the first ended. |
| Moving time | The sum of the parts. |
| Elapsed time | From the first start to the last finish, including the breaks between parts. |
| Laps | All existing laps are kept. A part with no laps becomes one lap. |
| Calories, ascent | Added up when every part has them, otherwise left blank. |
That table describes FIT files. GPX files are simpler: the track points are placed in time order in one track, with elevation, heart rate, cadence, temperature and power carried over.
Limits
- The parts must not overlap in time. Two devices recording the same ride at once is a different job, blending rather than joining, and this tool refuses it instead of producing a file with doubled data.
- FIT and GPX cannot be mixed in one join. Convert one set first so they match.
- Fields added by Connect IQ apps are kept from the first file only. Their definitions are tied to the file they were recorded in.
Before you upload the result
Platforms generally will not accept an activity that overlaps one you already have, so the separate pieces usually have to be deleted first. Keep your downloaded originals until the joined activity looks right. The full sequence is in how to combine two activities.