Logo

Devil Dog Ultras

Triangle, United States • 6-7 Dec 2025

Devil Dog Ultras is a challenging trail running event held in Prince William Forest Park near Triangle, Virginia. It offers three race distances: 100 miles, 100K, and 50K. The course features primarily single-track trails with some roots, rocks, and brief technical sections, along with fire roads and rolling hills but no major climbs.

The 100-mile and 100K races consist of multiple loops (five and three respectively), while the 50K includes one loop plus an additional 9-mile loop. Aid stations are well-stocked with food and water, and crew access is limited to certain points. The event fosters a supportive atmosphere with experienced volunteers and encourages participation through a unique loyalty challenge rewarding runners who complete multiple distances over consecutive years. Visit the organization's website for the most recent information.

United States Virginia Triangle

Race information

Website Registration
100 mi
100-Mile
100 km
100k
50 km
50k
Visit the organization's website for the most recent information.
Trail runs nearby

Leopold's Preserve 10k

Broad Run - 28 mi from Triangle

The Leopold's Preserve 10k is a trail running event held at Leopold’s Preserve, a 380-acre nature conservancy in Haymarket, Virginia. The course features mostly flat, dirt paths with some roots, offering a scenic and natural running experience. The 10k route is an out-and-back course with a detour o..

DHRT 50k

King George - 21 mi from Triangle

The DHRT 50K is a challenging trail race held in King George, Virginia, along the Dahlgren Railroad Heritage Trail. This 50-kilometer event takes place in August, presenting runners with the added challenge of Virginia's intense summer heat and humidity. The course is fast and flat, mostly shaded by..

3H Trail Half Marathon - King George, VA

King George - 21 mi from Triangle

The 3H Trail Half Marathon in King George, Virginia, is a scenic, flat, and fast out-and-back race held entirely on the Dahlgren Railroad Heritage Trail, a converted railroad bed offering solid footing with surfaces of dirt, gravel, grass, and pine needles. The course starts at the eastern end of th..

Dahlgren Heritage Rail Trail 50K

King George - 21 mi from Triangle

The Dahlgren Heritage Rail Trail 50K is a challenging ultramarathon held in King George, Virginia, on the Dahlgren Railroad Heritage Trail. This flat, fast, and well-maintained out-and-back course spans 31 miles along a converted railroad bed featuring dirt, grass, pine needles, crushed stone, and s..

VHTRC Women's Half Marathon

Fairfax Station - 17 mi from Triangle

The VHTRC Women's Half Marathon will take place in Fairfax Station on Saturday 13 September 2025. You can run between 7 and 13 miles.

Adventure Trail Run

Triangle

The 12 Hour Adventure Trail Run takes place at Prince William Forest Park near Triangle, Virginia. This challenging event features a 6.5-mile figure-eight loop course on 100% trail terrain, including single track and fire roads, with approximately 650 feet of elevation gain per loop. The course offe..