Python script to convert Map My Ride workout JSON to GPX. To get the Map My Ride workout JSON, take your workout page URL which looks something like: http://www.mapmyride.com/workout/012345678
And make it: http://www.mapmyride.com/workout/track/012345678
Download that file to your computer and run:
./path_to_mmr_gpx.py path/to/file/you/downloaded.json