How can I import my rides from Garmin Connect
If you have a ride history 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 "Add
New Activity" and selecting "upload a file from your computer" (or
just click here http://app.strava.com/upload/select)
Select the file you want to upload.
Or, you may also upload your rides in bulk by enclosing them in an email and sending them to upload@strava.com and mailing them from the address you registered with.