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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.

United States Virginia Williamsburg

Race information

Website Registration
12 hr
12 Hour
Visit the organization's website for the most recent information.
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