OTT Ultra Marathon

OTT Ultra Marathon is a 30-mile trail race through the Brecon Beacons, organized by OTT Events. The course starts at Cyfarthfa Castle in Merthyr Tydfil and follows the Taff Trail before venturing onto trails by the River Taff toward the Beacons Reservoir. After crossing the A470, runners summit Pen y Fan, descend via Jacobs Ladder to the Roman Road and Torpantau, then run along tracks by Dolygaer and Pontsticill Reservoir.

The route returns to finish at Cyfarthfa Castle. Features include a marked course, cup-less format, chip timing, five checkpoints (four with water/food) and a six-hour cutoff at Pen y Fan checkpoint; elevation gain 3,750 ft. Visit the organization's website for the most recent information.