Tough as Trails Race Series
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Tough as Trails Race Series
The Tough as Trails Race Series is presented by Bull City Running Co. It takes place across multiple locations in Durham, NC, including Eno River State Park, Uwharrie National Forest, and the Mountains-to-Sea Trail. The series spans the 2025-2026 season and is made up of three off-road trail races. One series listing shows a price of $0, 50 spots remaining, and registration closing October 25, 2025.
Races, distances and rules
- Eno River Run (10/26/25): 6 miles or 11 miles
- Uwharrie Mountain Run (2/7/26): 8 miles, 20 miles, or 40 miles
- Mountains-to-Sea Trail Challenge (4/12/26): 12 miles or 50 km
Participants must register for all three races during series registration and must complete all races to be eligible for series awards. Series scoring and awards are based on total mileage completed. Distance-change requests must be made one month before a race date to the series director; refunds are not issued for reduced distances and additional fees apply for increases. No refunds or participant transfers are permitted after registering for the series. All series finishers receive a custom finisher award and the benefits and finisher items provided by each individual race. Visit the organization's website for the most recent information.