How to Trim a Strava Activity (Crop & Fix)

Trim a Strava Activity with Strava's Crop Tool

Yes, you can trim a Strava activity after it's uploaded. Strava's built-in Crop tool removes unwanted data from the start and/or end of an activity — a parking-lot warmup, a recording you forgot to stop, the drive home.

1. On the web: open the activity, click the ⋯ menu, choose Crop, drag the sliders to the new start and end, and confirm.
2. In the mobile app: open the activity, tap the ⋯ icon in the upper right, choose Crop Activity, adjust the sliders (the arrows allow fine-tuning) and save.

Stats such as distance, moving time and average speed are recalculated from what remains. Only your own activities can be cropped, and only activities that have GPS data — some indoor activities are excluded.

Be careful: there is no undo. If you crop too much, the only way back is to delete the cropped activity and re-upload the original file (see below).

What Strava Can't Fix

Strava's tools are built for quick edge trims. They run out of road quickly:

• The bad data is in the middle. Crop only works from the start or end. Strava's split tool (web only, GPS rides and runs) can cut an activity into up to three pieces, but it replaces your activity with separate activities, and kudos and comments stay on the first part only.
• You need an exact cut point. Strava's sliders have no map-and-timeline preview of the whole ride, so landing on a specific intersection or trailhead is guesswork.
• The timestamps are wrong. Strava lets you change an activity's start time, but it can't repair a recording with a bad clock, a gap, or a pause in the wrong place.
• The ride is in two files. Strava can't merge a Garmin file and a phone recording into one activity. See how to merge GPX files for Strava.
• You want a clean activity from the start. Crop only works after upload, so the untrimmed version is briefly on your profile and in your followers' feeds.
• You cropped too much. Crop can't be undone.

When one of these applies, edit the original file offline instead.

Export, Trim in TrailBlender, Re-upload

This workflow works for any edit Strava can't make: trimming precisely, cutting the middle, or undoing a crop.

1. Export the original file. On the Strava website, open the activity, click ⋯ and choose Export Original. You get the untouched GPX or FIT file the device recorded. (If you still have the file on your computer or head unit, use that.)
2. Open it in TrailBlender and select the Trim tool.
3. Drag the start and end handles on the timeline. The map updates live so you can cut at a real landmark. To remove a stretch from the middle, split the ride at both ends of it, delete that piece and merge the rest.
4. Export the result as GPX or FIT. All sensor data (power, heart rate, cadence) is preserved.
5. Delete the original activity on Strava. Strava won't accept two copies of the same activity, so the original has to go before you upload the trimmed file.
6. Upload the trimmed file. Strava matches segments again from the GPS track, so segment efforts inside the remaining ride are recalculated.

What you lose by deleting: the kudos, comments and photos on the old activity don't come back, even if you later restore it from Recently Deleted. If the activity already has lots of kudos, try Strava's crop first and use this workflow only when crop can't do the job. Re-uploading also gives the activity a new upload date in feeds, and any segment results are rebuilt from the new file.

The same trimming steps are covered for pre-upload files in trimming warmup and cooldown from a GPX before Strava.

Which Method Should You Use?

• Cut a few minutes off the start or end, and the activity already has kudos: use Strava's crop tool.
• Cut the middle, hit an exact point, or fix an over-crop: export the original, trim in TrailBlender, delete and re-upload.
• The file covers several days: split it into one activity per day.
• You haven't uploaded yet: trim first in TrailBlender and upload once, with nothing to delete.

TrailBlender is free, open source and works offline, so your files never leave your computer. Download it below and trim your next ride before it reaches Strava.