OTT Marathon

Tackle one of South Wales' most iconic and challenging trail marathons at the OTT Trail Marathon on 16 May 2026 , an event that truly defines mountain running in the Brecon Beacons. This demanding 26.2-mile race takes you on a spectacular two-loop journey from the base at Parkwood Outdoors, directly ascending to conquer the summit of Pen Y Fan, the highest peak in southern Britain. The course doesn't stop there, also featuring the formidable climb of Tor y Foel, combining for a brutal yet breathtaking total ascent of nearly 5,000 feet across rugged, open moorland and technical trails. Organization and safety are paramount, with compulsory kit checks ensuring all runners are prepared for the rapidly changing mountain conditions that make this race both authentic and epic. Designed for experienced trail runners seeking a pure, unadulterated challenge, it strips away the frills to focus on the raw beauty and physical test of the landscape. Crossing the finish line after such a monumental effort rewards you with a profound sense of accomplishment, a unique finisher's coaster, and the bragging rights of having truly run "Off The Tarmac." It's more than a race; it's a rite of passage for any serious trail runner wanting to test their limits against the very best terrain Wales has to offer.