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OTT Marathon

Dol-y-Gaer, United Kingdom • 16 May 2026

The OTT Marathon & 10 Mile Race, held at Parkwood Dolygaer in Merthyr Tydfil, is a challenging mountain marathon set in the scenic Brecon Beacons. The marathon covers approximately 26.2 miles on a looped course featuring significant climbs, including Pen Y Fan, Fan Y Big, and Tor y Foel, with three checkpoints and a six-hour cutoff at 20.5 miles. The 10-mile race shares part of the marathon route before diverting back to the finish. Participants enjoy stunning mountain views and well-stocked aid stations. The event emphasizes safety with compulsory kit requirements and offers finishers commemorative coasters and buffs. Visit the organization's website for the most recent information.

United Kingdom Wales Dol-y-Gaer

Race information

Registration
26 mi
Ott Marathon - 26.2 (ish) Miles
10 mi
10 Mile Race
Visit the organization's website for the most recent information.
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