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Black Cattle Ultra Gwartheg Duon

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Saturday 29th August 2026

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Entries Open
Saturday 30th August 2025
Entries Close
Sunday 23rd August 2026
Courses
44 Miles; 33 Miles
Course Ages
44 Miles - 18 years or older
33 Miles - 18 years or older
Event Min. Age
18 or older
Age Limits
Relative to Event Date (29/08/2026)
Entry Fees
44 Miles   £90.00   
33 Miles   £80.00   
Contact
Mark

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The Race

Our simple aim is to put on the best races there are. These are just some of the comments from our first event

"The kindness shown by everyone at the aid stations was just wonderful.  Aid stations were well stocked which was so helpful"

                "everything you could want from a trail race (and more!)”

                                                                                “a spectacular event on Saturday! I couldn't have enjoyed it any more!”

We genuinely believe this is one of the best Ultras out there - from the amazingly varied route - mountain fells with ancient forts, to pretty woodlands with hidden fairy tale castles - to the sustainable ethos of local slate awards and locally crafted unique finishers mementos - there is so much, that the whole is just spot on - all supported by local runners passionate about their sport - with indoors loos and food stations on route.  ​​

This really is the experience you are looking for.

44 mile - 71K Ultra

What better way to start a race than at the beautiful Llanthony Priory, nestled in the Heart of the Black Mountains. You'll spend the day travelling back to Cardiff passing the fairy tale Castell Coch near the finish. Over mountains, wooded vales and picturesque villages, this is one amazing route. It's not easy, yet very rewarding - and something you will definitely want to come back for.

33 mile - 53K Ultra

This is not the “easy” option. Starting 11 miles into the 44 mile route, in the pretty town of Abergavenny, you will first meet the Blorenge - a very big climb to start the day. Wandering through the historic towns of Pontypool and Risca, before seeing our Machen Races venue. Finally, a traverse along the Cefn Onn ridge back to Cardiff via the iconic Castell Coch. Just like the 44 mile option, a glorious  mountain ultra along an amazing route which will no doubt have you wanting to come back for more.

Who We are

We are a Not-for-Profit community of running clubs from across South Wales.  Our other Races - Machen Trail Races and Radyr Trail races score on average 4.8/5 on Find a Race, Google and other ratings sites.  We seek to offer the very best trail races in the region - by runners for runners

View the Event Disclaimer / Terms and Conditions.

View the Event Cancellation / Refund Policy.

This event offers the option to purchase XCover, so that participants may be able to get a refund if they are unable to attend due to unforeseen circumstances.


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Event Location
Cardiff Harlequins Rfc, Diamond Ground, Forest Farm Road, Whitchurch, Cardiff, CF14 7JN
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