Brecon
Trail Running Calendar near Brecon 2026-2027
Explore the top trail runs near Brecon for 2026-2027! We've gathered 68 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
A 12 hour Backyard Ultra on a 4.2 mile loop near Crickhowell in the Black Mountains. The final lap is run in reverse as a sprint to decide male and female winners; medals are awarded for 32 miles or more.
A fell running race in Caerphilly on 26 September 2026 featuring a 9.5 km course with 336 m of climb, partially marked and with a short walk from parking to the start.
Trail race at Margam Country Park offering 5 km and 10 km routes through woodland with castle views. The event features chip timing, water stations, a finisher's medal and parking included with entry.
A multi-terrain 10K through country lanes and woodlands on 27 September 2026, organised by Wye Valley Runners to raise funds for the Herefordshire Special Care Baby Unit. The race finishes at Credenhill Social and Sports Club with on-site catering.
October 2026
A mixed terrain 9 mile loop in Bridgend where runners complete as many laps as possible within an 8 hour time limit.
A 7 hour Time Challenge at Dare Valley Country Park with flexible distances from 3 km to ultramarathon options. Finishers receive a themed medal, distance pins and refreshments including doughnuts and ice cream.
A fell race on 3 October 2026 with a 3.2 km route and 305 m climb near Storey Arms, included in the South Wales Series; entry on the day £2.
A multi-terrain 10 km race or walk around Llandybie on 11 Oct 2026 with steep climbs, a walking option, limited entries, and proceeds going to charity.
A seven hour Time Challenge at Dare Valley Country Park offering distances from 3km to 50km, themed finisher medals and distance pins, on course aid with vegan options, and basic venue facilities including toilets and free parking.
Join the Aberfan Memorial Run in Merthyr Tydfil to honour the 1966 victims and support the Aberfan Memorial Charity. Choose 5 km to ultra on a scenic tarmac loop along the Taff Trail with flexible start times and official timing.
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.
A series of mountain trail races across the Black Mountains and Brecon Beacons offering four distances from 21 miles to 100 miles. Routes combine marked sections, GPS navigation and staffed checkpoints with mountain safety cover.
Winter fell race up Sugar Loaf covering 9.6 km with 485 m ascent from The Crown, Pantygelli; full WFRA kit required and entry via Fabian4 with limited parking.
Timed lap event at Barry Sidings Country Park with flexible start times, distances from 5 km to ultra on a tarmac out and back course and a medal or no medal option.
November 2026
Approximately 7 mile multi terrain race to Twmbarlwm with about 1000 ft elevation, organised by Fairwater Runners Cwmbran at Risca Leisure Centre on 01 Nov 2026.
Three trail races of about 49, 26 and 13 miles around Talybont On Usk in November, featuring mixed terrain, significant elevation and variable weather.