How I Built This with Guy Raz

Strava: Mark Gainey and Michael Horvath

Mark Gainey and Michael Horvath were two friends from college with a good idea and bad timing: in 1995, they set out to create a digital community where athletes could chart their progress and actively compete with one another. But it was just too early: software engineers said it couldn't be built, and investors didn't want to take the risk. So the two…