Terms

What this is

A free tool that merges two or more of your own Garmin Connect activities into one. It is provided as-is, with no warranty and no uptime guarantee.

Merging deletes things

A merge deletes the original activities from your Garmin account and uploads a new one in their place. This is the point of the tool, and it cannot be undone from here — there is no server-side copy to restore from.

Two safety nets exist, and both are yours to use:

• The zip of original FIT files that downloads to your machine when you confirm, before anything is deleted. Re-import them at Garmin Connect → Import Data.
• Garmin's own Settings → Account → Recover Deleted Activities, which keeps deleted activities for roughly 30 days.

You are responsible for keeping that download. We accept no liability for lost activity data.

Relationship to Garmin

This project is not affiliated with, endorsed by, or sponsored by Garmin. It signs in to Garmin Connect on your behalf using the same private API their mobile app uses. Garmin may change or block that interface at any time, which would break this tool. Using it may conflict with Garmin's terms of service; that judgement is yours.

Acceptable use

Use it on your own Garmin account only. Do not use it to falsify activity data for competitions, leaderboards or anything else where the accuracy of a recording matters to somebody other than you.