Terrible Twelve

Williamsburg, United States • 23-24 Aug 2025

The Terrible Twelve is a 12-hour self-supported trail running event held at the Warhill Nature Trail in Williamsburg, Virginia. Participants run or walk as many 3.7-mile loops as possible on a crushed gravel course featuring rolling hills and scenic views, though personal lighting is required for night running. The race starts at 7 PM and ends at 7 AM, with a unique format requiring runners to volunteer for one hour during the event to support others. Amenities include water, Tailwind nutrition, a grill, indoor restrooms, and ample space for tents. The event fosters camaraderie despite challenging conditions and is ideal training for ultra-distance races. Visit the organization's website for the most recent information.

Race information

12 hr
12 Hour
Visit the organization's website for the most recent information.
Trail runs nearby

The Taskinas Creek Half Marathon, set in York River State Park, Williamsburg, VA, offers a unique trail running experience. Scheduled for June 1, 2025, this event features a challenging course that includes single track trails, fire roads, and a short road section, with a time limit of 4.5 hours. Re..

The Night Owl 9K is a challenging trail race held at Freedom Park in Williamsburg, Virginia. The 9-kilometer course features a mix of single track, fire road, and paved trails with rolling hills and technical sections including roots and twists, offering a mountain bike trail-like experience. The ra..

The Greensprings 24 is a 24-hour endurance race held in Williamsburg, VA, starting on October 25, 2025. Participants can run, walk, or crawl on a scenic, flat, crushed gravel loop course, with each loop measuring 2.215 miles. The event encourages runners to reach personal milestones such as 50 miles..

The Noland Trail 50K & Relay is a unique running event held in Newport News, Virginia, within The Mariners’ Museum Park. Participants can choose to run the solo 50K race or join a relay team of 2 to 6 members to complete six laps on the scenic Noland Trail, with short course sections before and afte..

The Snowy Owl 10 Mile is a challenging trail race held at York River State Park near Williamsburg, VA. The course features a mix of terrain including five miles of technical single track trails, about three-quarters of a mile on paved road, and the remainder on dirt fire road trails. Runners will en..

The Virginia Run for Cancer is a unique running event scheduled for April 26, 2025, in Hampton, VA. Participants can choose to compete individually or as part of a team in a 24-hour race format. The event aims to raise funds for the American Cancer Society, with a lifetime total of $310,000 raised t..