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Black Cattle Ultra Gwartheg Duon

Cardiff, United Kingdom • 29 Aug 2026

Event

The Black Cattle Ultra (Gwartheg Duon) is scheduled for Saturday 29 August 2026. The event is organised by Ridge Runners and is based at Cardiff Harlequins RFC, Diamond Ground, Forest Farm Road, Whitchurch, Cardiff, CF14 7JN. The routes follow sections of the Cambrian Way into Cardiff and pass Castell Coch near the finish. Terrain includes mountains, wooded vales and villages. The event is listed as an offline, in-person race.

Courses and entries

  • 44 Miles - 71K Ultra: starts at Llanthony Priory in the Black Mountains.
  • 33 Miles - 53K Ultra: starts in Abergavenny, about 11 miles into the 44-mile route.

Both courses have a minimum age of 18 years. Entry fees are £90 for the 44-mile option and £80 for the 33-mile option. Entries open 30 August 2025 and close 23 August 2026. The event description notes aid stations, indoor toilets at some locations and locally crafted finishers mementos. Visit the organization's website for the most recent information.

United Kingdom Wales Cardiff

Race information

Website Registration
44 mi
44 Miles
33 mi
33 Miles
Visit the organization's website for the most recent information.
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