The document summarizes demographic information about users of the MapMyRun app and website. It finds that the typical user is a 35-49 year old Caucasian woman with a graduate degree earning $60,000-100,000 annually. These users log their runs and share their training and race experiences on social media primarily for motivational purposes. They are very engaged with running and participate in races from 5Ks to marathons with a preference for half marathons.