OTT Marathon

Dol-y-Gaer, United Kingdom • 15 May 2027

OTT Marathon & 10 Mile Race

The event comprises a mountain trail marathon and a 10 mile race based at Parkwood Dolygaer, Merthyr Tydfil, in the Brecon Beacons. The marathon is described as approximately 26.2 (ish) miles and is a looped route that visits Pen Y Fan via Graig Fan Ddu, continues up Fan Y Big, passes Talybont Reservoir, climbs Tor y Foel, then returns to Parkwood Dolygaer.

Distances:

  • 26.2 (ish) miles marathon loop
  • 10 miles follows marathon route to Checkpoint 1 then returns to Dolygaer

The marathon has three checkpoints: Checkpoint 1 at 7 miles, Checkpoint 2 at 14.5 miles, and Checkpoint 3 at 20.5 miles. There is a single cutoff for the marathon of six hours at 20.5 miles. The 10 mile race has one checkpoint at 7 miles where runners must check in before continuing to the finish.

Compulsory kit for the marathon includes a reusable cup, charged mobile phone, minimum 1 litre hydration, foil blanket or bivvy bag, 400 kcal emergency rations, basic first aid kit, head torch or torch, compass, whistle, waterproof jacket and trousers with taped seams, warm layer, hat and gloves, and a rucksack. Compulsory kit for the 10 mile race includes a reusable cup, first aid kit, bivvy or foil blanket, 500 ml of water, and a waterproof jacket.

All finishers receive an OTT coaster and a buff. Visit the organization's website for the most recent information.

Race information

26 mi
Marathon
10 mi
10 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Trail event in Talybont on Usk offering 24K and 51K routes with marked trails, stocked aid stations, GPX files and chip timed results.

A pancake-flat *10 km* out and back along the Brecon and Monmouthshire canal between Gilwern and Llangattock, set in the Brecon Beacons National Park. Finishers receive a medal, there is a drink station at 5 km, and entries are online only.

A social 5K in Newport with music and mobile speakers, meeting and finishing at banc coffee & records; tickets are free and under 14s require a parent or guardian.

A 7.5 km fell race around Cwrt-y-Cadno Show fields with 264 m of climb; entry to the show is £5 and the course is partially marked with a minimum age of over 16.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.