Builth Wells
Trail Running Calendar near Builth Wells 2026-2027
Explore the top trail runs near Builth Wells for 2026-2027! We've gathered 45 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
A memorial road and off road event organised by Green Events featuring a half marathon and a 12k in mountainous scenery. The race is cupless, open to those over 16, and lists online and on the day entry options.
Mountain trail races across the Brecon Beacons and Black Mountains offering distances from 21 miles to 100 miles with GPS navigation and staffed checkpoints.
A 9.6 km fell race with 485 m ascent near Abergavenny on 31 October 2026; full WFRA kit is required and parking at the pub is very limited.
November 2026
Mixed trail, mountain, canal and road runs around the Brecon Beacons on 7 November 2026, offered at 50 miles, 26 miles and 13 miles.
A 30 mile trail ultra from Merthyr Tydfil through the Brecon Beacons with four checkpoints, mandatory kit and a six hour cut-off at checkpoint three.
A 5.7 km fell race in Llanfoist with 485 m of ascent, limited to 120 runners and supporting local woodland restoration.
December 2026
Skirrid Xmas Hill Race is a 5.7 km fell race with 450 m ascent near Llanvihangel Crucorny on 19 December 2026; entry £10, no entries on the day.
January 2027
Lap-based timed event in Rhydycar, Merthyr Tydfil with a 5.3 km tarmac lap, distances from 5 km to ultra, timed over seven hours and a no-medal entry option.
An annual walking or running event in the Elan and Claerwen Valleys offering 20 miles (3000 ft) and 12 miles (1800 ft) routes across upland terrain.
Two self-guided winter ultramarathons in the Brecon Beacons on 30 January 2027, for experienced runners with strict compulsory kit and navigation requirements.
February 2027
A Backyard Ultra near Crickhowell on 6 February 2027 featuring repeated 4.2 mile loops, a reversed final race lap, trophies for final lap winners and medals from 32 miles.
March 2027
Trail running event in the Black Mountains with marked 10, 20 and 40 mile routes from Crickhowell, marshals, stocked checkpoints and strict mandatory kit requirements; canicross friendly and GPX routes available.
Annual March challenge walk around Abergavenny with four route options from about 10 to 20 miles, mountain checkpoints and charity fundraising.
April 2027
Trail running in the Brecon Beacons with marked 10, 20 and 40 mile routes, staffed checkpoints, GPX files and mandatory kit checks.