Track your rides and runs via your iPhone, Android or GPS device, analyze your performance, and compare with friends.
Athletes that run over 42.16 km during the Challenge will earn a badge in their Trophy Case.
The Challenge starts and ends based on each runners local time zone.
Manual entries, treadmill runs, or runs marked 'Private' will not count towards your Challenge effort.
All activities logged during the Challenge period must be uploaded to Strava no later than three days after the Challenge ends.