FAQ: Sync Activities from Other Sources like Garmin, Wahoo, Strava
Duplications of data from Strava & other source?
This can happen if Strava and another source both import the same workout but with slightly different files (for example different moving time or distance). Auto-matching may fail, so both entries stay visible.
Recommandation: Only keep downloads of activities from the original source. Disable the Strava download option if your activities always come from another source. You can also filter activity types from Strava if you have an activity type that is only synced from Strava.
Also note: Strava privacy circles can affect reported distance/time and increase mismatch cases.
Links:
Duplicates of data from two sources (not Strava)?
Yes, duplicates can occur when two direct sources send the same workout (or after reconnect/reimport). Non-Strava source combinations are not always deduplicated automatically.
What helps:
- Keep one primary source per device/sport where possible.
- Disable duplicate import paths.
- Clean up existing duplicates on the activity list view by sorting after source or creation date once after changing source setup.
Links:
Garmin historical data missing
Garmin limits historical fetches and so historical backfill can be incomplete or fail (for example duplicate/overlapping request issues). In that case, Intervals.icu may not receive all older workouts automatically.
What to do:
- Use full-history import (
Import All Garmin Data). - If specific workouts are still missing, export FIT files from Garmin Connect and upload them manually.
Links:
“Download All Data” ZIP is too big or does not import
Do not upload the huge Garmin ZIP file directly. Use the download hyperlink from Garmin’s email.
Correct workflow:
- In Garmin’s email, right-click the download link and copy the hyperlink.
- Paste that URL into Intervals.icu
Import All Garmin Data.
Links: