Merthyr Tydfil
Trail Running Calendar near Merthyr Tydfil 2026-2027
Explore the top trail runs near Merthyr Tydfil for 2026-2027! We've gathered 94 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
June 2027
Military themed D Day series run at Parc Taf Bargoed with 5.3 km laps; choose distances up to ultra within a seven hour time limit and earn commemorative medals.
A race in Llanwrtyd Wells on 12 June 2027 that pits runners against horses, with electronic timing, enforced cut-offs and a rolling jackpot for any runner who beats the first horse.
Magic Roundabout is a 10k trail race on 13 June 2027 near Hay-on-Wye in the Begwyn hills, with hilly terrain and post-race hot and cold refreshments.
A five-mile mixed-terrain race through Porthkerry Country Park with varied surfaces, two climbs, age-group prizes and a 1 hour 15 minute time limit.
An inflatable obstacle-course fun run at Heath Park Cardiff on 26 June 2027 with lap-based distances from 2.5k to 15k and giant inflatable obstacles.
July 2027
A 10 hour loop endurance challenge on Mynydd Troed with roughly 2.7 mile marked laps, about 1,000 ft ascent per lap, solo, pairs and four‑person team entries.
A 16.5 kilometre mountain race in Llanfrynach on 10 July 2027 with 670 m ascent, WFRA BM classification, a 75 minute summit cut off and mandatory map and compass.
Trail races on the private Merthyr Mawr Estate with a 12K, half marathon and marathon across dunes, river crossings and the Glamorgan Heritage Coast.
A 100 mile self-navigation ultramarathon across the Brecon Beacons with 6143 m ascent, 10 checkpoints, strict qualifying criteria and a 40 hour cut off.
An urban navigation challenge in Cardiff where participants are blindfolded, dropped at an undisclosed location and must return across 6, 10 or 15 miles without maps or GPS.
A two day trail ultramarathon in the Brecon Beacons near Abergavenny with distances up to 100 miles, on site camping, and UTMB index status.
A self-navigated 100 km across the Brecon Beacons with 3178 m ascent, six staffed checkpoints, strict qualifying criteria and a 24-hour cut-off.
Three coastal ultramarathons on the Wales Coast Path finishing at the Norwegian Church in Cardiff Bay, offered over 100 miles, 50 miles and 50 km.
August 2027
Mountain trail races from Talybont-on-Usk in the Brecon Beacons with 51 km and 24 km options, cupless aid stations, chip timing and a mandatory briefing.
Timed laps of a 5.3 km out and back course at Barry Sidings Country Park on 22 August 2027, with distances from 5 km up to ultra and a seven hour limit.