Brecon to Cardiff Xtreme & Taff Xtreme Marathon

FEB
14
2027
Mountain to city winter races from Brecon to Cardiff featuring a 75 km ultra and a 26.2 mile marathon on unmarked mountain routes with GPS navigation required.
Sun 14 Feb 2027
UTMB 50K/100K 75 kilometers 26 miles

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Brecon to Cardiff Xtreme & Taff Xtreme Marathon

The event comprises two linked mountain to city races organised by Run Walk Crawl and based at Coleg y Cymoedd, Heol Cronchendy, Parc Nantgarw, Nantgarw, Wales CF15 7QX. The Brecon to Cardiff Xtreme Ultra follows a winter mountain route from Brecon to Cardiff that includes major peaks, technical terrain and remote ridgelines. The Taff Xtreme Marathon joins the same course at Merthyr and covers the second half toward the finish at Coleg y Cymoedd.

Course and logistics information from the organiser:

  • 75 km / 2800 m ascent for the Xtreme Ultra
  • 26.2 miles / 1200 m ascent for the Taff Xtreme Marathon

Additional factual details: The Ultra route passes 11 major peaks including Pen y Fan, Cribyn and Fan y Big. The route is unmarked on mountain sections and requires GPS navigation. The Ultra uses six checkpoints and offers an indoor halfway checkpoint at Merthyr with drop bag access; the Marathon uses three checkpoints. Terrain includes remote forest ridgelines and technical descents, and the organiser notes winter conditions. The finish is at Coleg y Cymoedd with GPS tracking in place. Entry prices listed by the organiser are £90.00 plus a £5.82 booking fee for the Ultra and £50.00 plus a £3.42 booking fee for the Marathon. Refund, credit and ticket transfer rules are set by the organiser with specific cutoff dates and fees. Visit the organization's website for the most recent information.

Events nearby

Trail Half Marathon Wales at Margam Country Park on 14 November 2026 features fully marked forest races over 21.1 km and 10.2 km with checkpoints and included parking.
The Smurf Run at Dare Valley Country Park is a seven hour Time Challenge on well maintained park paths, with distances from 3 km up to 50 km. Finishers receive themed medals, distance pins and a goody bag with vegan options.
Two trail distances on 28 November 2026 around Machen, featuring wooded single track, ridgeway exposure and steep climbs. The half course is fully marked while the marathon requires self navigation with marshals at key points.
Lap-based timed event at Parc Taf Bargoed on 28 November 2026 offering flexible distances from a 5.3 km lap up to ultra, with medal and no medal entry options.
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