The Teva Mountain Games are the country's biggest outdoor multisportapalooza: a four-day binge of trail running, bouldering, mountain biking, road cycling, whitewater kayaking, stand-up paddleboarding, beer-drinking ... you get the idea. The best part? You can enter any event and race alongside the pros. Runners: go for the grueling 10K trail race up and down Vail's ski slopes. The best spectating is at the climbing wall for the Bouldering World Cup (arrive early for good seats) and—surprise—the Dock Dogs contest (think flying dog toys, flying canines, and slobbery splashes in a pool). Be sure to snag one of the affordable creekside rooms at Vail Mountain Lodge, where you can watch stand-up paddleboarders and freestyle kayakers from your balcony (from $179; vailmountainlodge.com).
Giro's lightweight, breezy Aeon helmet ($250; giro.com) is the perfect accessory for the time-trial races at Teva Mountain Games.