Mark Gainey is the co-founder and executive chairman of Strava, a platform where more than 50 million athletes around the world track their workouts and compare their stats. In this talk, he explains the “inch wide, mile deep” strategy that informed both Strava and his previous startup, Kana Communications. He explores how, by first focusing intently on the niche category of passionate road cyclists, Strava earned a credibility that ultimately allowed the company to scale into many other sports.