Here, the average running distance per run, according to the app: Here, the average weekly mileage: Coros users generally log ...

Even with the cardiovascular benefits of altitude, it becomes difficult to run fast there, with marathoners typically running 10 to 15 seconds a mile slower in the thin air than at sea level. It also ...

Long runs serve as the cornerstone of any runner’s training plan. These essential workouts are necessary to help you build up your mileage gradually overtime so you can confidently run the distance ...

Don’t miss this opportunity to run Chicago, available exclusively to Runner’s World+ members.

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Nothing feels more satisfying than turning your tracker off after a run and ...