

About the event
Commencing with a steep ascent up Cribyn's north ridge, the 21-mile trail race joins the ultra-distance routes at the summit. Participants then summit Pen Y Fan via 'Jacob's Ladder,' traverse Corn Du, and descend to the Storey Arms Centre. The course continues over Fan Fawr and Fan Llia before descending into Ystradfellte and the forest trails of 'waterfall country,' passing under the stunning Sgwd Yr Eira waterfall en route to the finish in Pontneddfechan. With approximately 1,600 meters of elevation gain, this race, organized by Run Walk Crawl on October 31, 2025, provides a rewarding challenge amidst some of Wales' most picturesque landscapes.
Date:
Fri
Oct 31
2025
Location:
Distance:
Elevation profile:
Hilly
Website:
LinkElevation gain:
Number of participants:
Find the best training plan for your goals and the distance you’re planning to run:
Stories from Runnas
Take your running to the next level
The Black Beacon 21-Mile Trail Race starts with a climb up the north ridge of Cribyn and concludes in Pontneddfechan, offering runners a taste of the Bannau Brycheiniog's rugged terrain. With an elevation gain of about 1,600 meters, this event on October 31, 2025, is suitable for trail enthusiasts seeking a substantial challenge.
If you are an official race organiser with any questions about this page, please get in touch: races@runna.com
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