One breezy summer day, I was 15 miles out on a 16-miler, running on a busier-than-usual rail trail near my apartment. The marathon I was training for was a month out and, despite the heat, I was ...

If you're into trail running, chances are you've heard of Strava. The fitness tracking app launched 15 years ago to immediate success in the US and abroad, giving users a quick and simple way to ...