Transferring an activity file from Garmin Connect to Strava:
If you have an activity saved on Garmin Connect - you can easily move your ride history to Strava.
1 Login to Garmin Connect (http://connect.garmin.com) 2 Hit the "Activities" link to give you a list of all your uploads 3 Click on each ride (tip: open each in a new tab) 4 Underneath the map, click on the link that says "Export" 5 Choose "TCX"
That will save the ride file to your computer.
Now you may upload your files one at a time by clicking on "Upload Activity" and selecting "upload a file from your computer" (or just click here http://app.strava.com/upload/select)
Bulk Import of activity files to Strava:
From the Strava upload page, you can select up to 25 files at a time for upload after selecting "upload a file from your computer."
Other tools for transferring Garmin Connect data to Strava: