1 duathlon event in Dumfries, Virginia

From big races to Saturday morning group runs—find duathlon events and connect with the local endurance sports community.

• Montclair Triathlon [runsignup.com]
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  Sun, Jun 28, 2026 at 7:00 AM

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  Lake Montclair is set in beautiful Northern Virginia with a great surrounding community supporting this event. Montclair residents enjoy the Lake front setting and the awesome Dolphin Beach where the...

  Lake Montclair is set in beautiful Northern Virginia with a great surrounding community supporting this event. Montclair residents enjoy the Lake front setting and the awesome Dolphin Beach where the triathlon starts and finishes.

  Montclair is conveniently located 25 minutes south of the Beltway, and just 40 minutes from our nation’s capitol. Montclair is bordered on the south by Prince William National Forest Park, which boasts camping and walking trails. It is also a 15 minute drive from Marine Corps Base Quantico. With two major airports within 40 miles and Potomac Mills Mall 5 miles outside our community, centrally located for shopping, dining, recreation and some of the best sightseeing in the area.

  12.5 Miles 15.6 Miles 16.1 Miles Duathlon Trail Triathlon Walk

  4398 Spillway Lane, Dumfries, Virginia, 22025, United States
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