Miles are earned by syncing your Garmin device, or Strava account to the Fleet Feet app, and recording your runs/walks. You can also earn miles by checking into some store events, and completing surveys on the Fleet Feet app. Miles are not earned through merchandise purchases, and miles cannot be converted to points.
You can earn up to 100 miles per month from logging your runs through Strava or Garmin. Please note that if you reach the 100 mile limit from Strava, or Garmin activities, you can continue to earn reward miles from in-app activities, such as surveys, and checking in for an event.