7. Colorado: Vail Mountain Games (2016)

The Boundless athletes take on the punishing Ultimate Mountain Challenge, the toughest event in the multi-day Vail Mountain Games festival. Cheered on by friends and family, they complete in standup paddling, mountain biking, trail running and a road bike time trial - each race pushing the athlete's fears, injuries and endurance in ways they never expected.

Release date: 2016-05-24