With lots of users pouring in lots of data, Strava is great for viewing routes, comparing Segments (parts of a route), but essentially, keeping track of your own performance and training goals (Article on Classroom Application).
Use this to find out students' paces if they do not have a phone to record their runs using Strava.
Fitness site has good options for students to use as a resource
Create custom maps to trace a fitness route or series of fitness related activities. Add media and text to points of interest.
Embed comprehend questions and scaffold thinking for instructional videos to check for student understanding and deliver instruction.