strava summit includes a "suffer score" if heart rate data is available during an activity. the suffer score allows strava to rank user activities, which is used for strava's training plans and customized goals. other features of the subscription include beacon, live location tracking of the athlete for family and trusted friends, live performance data and live segments, used to check real time information and compare athlete's best available record in strava, and strava premium only leader-board, power meter analysis, race analysis, workout analysis, gpx export, personal heatmap and trophy case.