Black Cattle Ultra Gwartheg Duon
Cardiff, United Kingdom • 29 Aug 2026
Event overview
The Black Cattle Ultra Gwartheg Duon is scheduled for 29 August 2026 at Cardiff Harlequins RFC, Diamond Ground, Forest Farm Road, Whitchurch, Cardiff CF14 7JN. The event is organised by Ridge Runners, a not-for-profit community of running clubs from South Wales. Entries open 30 August 2025 and close 23 August 2026. Entry fees listed are £90 for the 44-mile option and £80 for the 33-mile option. The minimum age for both courses is 18. At the time of this listing there are 5 participants entered. Participants may have the option to purchase XCover for a possible refund in specified circumstances.
Course details and logistics
The event offers two point-to-point trail ultras along the Cambrian Way into Cardiff, passing Castell Coch near the finish. Distances:
- 44 miles (71K)
- 33 miles (53K)
The 44-mile course starts at Llanthony Priory and travels over mountain fells, woodlands and villages toward Cardiff. The 33-mile course starts in Abergavenny, joins the route after roughly 11 miles, and includes an early climb of the Blorenge, passages through Pontypool and Risca, a visit to the Machen Races venue, and a traverse of the Cefn Onn ridge before reaching Castell Coch. The event description notes aid stations, food stations and indoor toilets on route. Visit the organization's website for the most recent information.