Course
A looped mountain trail course starting and finishing at Parkwood Outdoors, Dolygaer, near Merthyr Tydfil. The marathon climbs Pen y Fan from Graig Fan Ddu, crosses Fan y Big and finishes over Tor y Foel above Talybont Reservoir, with 1,492 m of ascent; the 10 mile shares the opening section then returns on forestry tracks. Three checkpoints on the marathon and compulsory kit for both.
Key dates
- !RegistrationOpen now
- ★Race daySat 15 May 2027
About
The Off The Tarmac Trail Marathon & 10 Mile starts in Merthyr Tydfil and heads into the foothills of the Brecon Beacons, South Wales. It is part of the wider Off The Tarmac series, which also includes an ultra marathon on the same trails.
Save Off The Tarmac Trail Marathon & 10 Mile to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.
