Tenacious Ten Ultra
Join Tenacious Ten Ultra 2026
After years of testing runners on Table Mountain and Pen Cerrig-calch in the heart of the Welsh Black Mountains, we’re taking things up a notch — quite literally. This year, the event moves to the iconic Mynydd Troed, offering a brand new challenge and a chance to set the very first course record!
Prepare for false summits, breathtaking 360° views of the Black Mountains, Brecon Beacons, and the stunning Llangorse Lake nestled in the valley below.
The race is a 3.2-mile strenuous and technical loop with relentless elevation. While the loop is shorter than in previous years, the climb makes up for it — and then some! You’ll have 10 hours to complete as many loops as you can, but beware: only the brave will endure to the end.
We’re also introducing a new twist:
First lap: Clockwise ascent and descent. Following laps: You choose the direction — clockwise or anti-clockwise!
The terrain is harsh, with steep ascents, technical descents, and runnable open trails. Two clip stations — at the summit trig point and the mountain base — will track your progress via a laminated card.
Key Rules:
10-hour strict cut-off: Any loop not completed before the final horn won’t be counted. Teams of 4, pairs, and solo entries welcome. Team scores are the collective total of completed loops — even if a teammate drops out. Medical checks apply — runners deemed unfit may only continue at their own risk.
The course is fully marked. Whether you run solo or in a team, one thing is certain: the mountain will test your endurance, determination, and grit.
Will you be the one to set the first-ever course record?
Come along. Conquer the Mountain.
Course details
Start address: Perth Y Pia, Llanbedr, Crickhowell, UK
Finish address: Perth Y Pia, Llanbedr, Crickhowell, UK
Route map
Register
Registration closes on 07 May (294 days left)
116 EUR
Cannot be combined with other tickets
174 EUR
Cannot be combined with other tickets
selected tickets
Total
You can, within 24 hours after your registration, get a full refund if you change your mind.
We accept
What’s included
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done Finisher medal
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done Timing chip (single use)
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done Photo Service
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done Post-race meal
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done Drink Stations
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done Nutrition Stations
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done Medical Assistance
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done Bag drop
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done Toilets
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done Shower
Reviews
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Frequently asked questions
What is the cancelation/refund policy for this event?
Entry fees cannot be refunded under any circumstances.
MANDATORY KIT
Waterproof Jacket and trousers, Race vest/pack, Baselayer Top - Must be either synthetic or merino wool, we suggest spare socks, Capacity to carry 2 litre of fluid, Emergency Food for the duration, Map or gpx file downloaded, Fully Charged Mobile Phone + back up, Hat & gloves, Appropriate footwear (trail shoes), First aid kit - essential items , Foil blanket, Reusable Cup, Head torch & whistle + spare batteries, Anti bacterial gel, mask & gloves
The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.
