Lake Montclair Triathlon

Enjoy one of Northern Virginia's oldest triathlons. Staged at Dolphin Beach, Lake Montclair is set in beautiful Northern Virginia. Participate in either the Sprint triathlon, duathlon or aquabike. This race is sanctioned by USA Triathlon. ​ Triathlon - 750 Meter Swim | 12.5 Mile Bike | 3.1 Mile Run Triathlon Relay - 750 Meter Swim | 12.5 Mile Bike | 3.1 Mile Run Duathlon - 1.5 Mile Run | 12.5 Mile Bike | 3.1 Mile Run Duathlon Relay - 1.5 Mile Run | 12.5 Mile Bike | 3.1 Mile Run AquaBike - 750 Meter Swim | 12.5 Mile Bike ​