Black Cattle Ultra Gwartheg Duon
Cardiff, United Kingdom • 29 Aug 2026
Event details
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 across South Wales. Entries open 30 August 2025 and close 23 August 2026. The minimum age for all courses is 18 years. Entry numbers listed on the organiser page show 2 participants so far.
Courses and logistics
- 44 miles (71K) - starts at Llanthony Priory; follows the Cambrian Way into Cardiff.
- 33 miles (53K) - starts in Abergavenny; includes an early climb of the Blorenge and joins the main route later.
Both routes pass varied terrain including mountains, wooded vales and villages, and go by Castell Coch near the finish. The 33 mile route passes Pontypool, Risca and the Machen Races venue and traverses the Cefn Onn ridge. The event lists indoor toilet facilities and food stations on route. Entry fees shown are £90 for the 44 mile and £80 for the 33 mile. The organiser offers an optional XCover refund insurance option and publishes event terms and a cancellation/refund policy. Visit the organization's website for the most recent information.