Rasus y Bannau

MAY
2-3
2026
Three circular trail races from Brecon through the Bannau Brycheiniog National Park, offered as 100 km, 75 km and marathon distances with marked routes, checkpoints, GPS files and mandatory kit for mountain navigation.
2-3 May 2026
100 kilometers 75 kilometers 43 kilometers

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Rasus y Bannau - Brecon Beacons trail races

Rasus y Bannau are three long-distance trail races that start and finish in Brecon and follow circular routes through the Bannau Brycheiniog (Brecon Beacons) National Park. The event base and start/finish location is Theatr Brycheiniog in Brecon; public pay and display car parks are available nearby.

Distances:

  • 100 km 65 miles / 104 km, +5100 m ascent
  • 75 km 46.5 miles / 75.5 km, +3500 m ascent
  • Marathon 26.5 miles / 43 km, +2000 m ascent

All courses begin in Brecon town centre and climb onto the north ridge of Cribyn, then proceed east to Fan y Big and along ridgelines toward Carn Pica. The marathon route turns toward Blaen y Glyn, Torpantau, Corn Du and Pen y Fan before returning to Brecon. The ultra courses descend to Talybont Reservoir, climb Tor y Foel and follow the Beacons Way across Fan Fawr, Fan Llia and, on the 100 km, onto the Black Mountain and Fan Brycheiniog before rejoining the 75 km line.

There are 9 checkpoints for the 100 km, 6 for the 75 km and 4 for the marathon. Checkpoints provide drinks and a range of food; a drop bag is available at CP5 (around 50 km) for the ultra races. The route is marked at major junctions, and a GPS file is provided for navigation. A compulsory kit list applies, and participants must be able to navigate and look after themselves in mountain conditions. Entry inclusions also list GPS tracking and timing, mountain safety teams, emergency first aid, route marking, finishers medal and event photography. Visit the organization's website for the most recent information.

100 km
100 Km
75 km
75km Ultra Trail
43 km
Marathon