Merthyr Mawr
Trail Running Calendar near Merthyr Mawr 2026-2027
Explore the top trail runs near Merthyr Mawr for 2026-2027! We've gathered 78 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
February 2027
A 7 hour time-challenge at Dare Valley Country Park offering looped distances from 3 km up to ultra, with medals, distance pins, goody bags and on-course aid.
March 2027
A 7 hour Time Challenge at Dare Valley Country Park offering distances from 3 km to 50 km, themed medals, goody bags and aid stations.
Timed, lap based event at Barry Sidings Country Park on 21 March 2027 offering distances from 5 km to ultra on a 5.3 km out and back lap with a seven hour limit.
April 2027
Timed lap event in Cardiff Bay on 11 April 2027 offering distances from a single 5.3 km lap up to ultra within a seven hour limit.
A 10.3 km linear Exmoor trail from Selworthy Beacon to Minehead Beach, with an adult route and a five-leg youth relay.
A last-person-standing Backyard Ultra at the Medieval Village, Cosmeston Lakes: runners repeat a fixed 6706 m loop each hour until one athlete completes one more loop than anyone else. Camping and on-site facilities are provided.
Timed multi distance event on a 5.3 km Cardiff Bay lap with options from 5 km to ultra, a seven hour limit and flexible start times.
May 2027
A 5k obstacle course at Coopers Field, Bute Park, Cardiff, with tarmac paths and grassy sections that can get boggy after rain. The event raises funds for Cancer Research UK and uses staggered wave starts; participants must be 13 or older.
A 50-mile trail ultra near Minehead on 8 May 2027 with about 7,337 ft of ascent, six aid stations and varied coastal, woodland and moorland terrain.
A trail marathon around Cardiff with about 1,300 m of climbing, mixed off-road terrain, partial self-navigation, checkpoints and support during the Radyr and Morganstown Festival.
A muddy 5k obstacle course through Singleton Park with mixed terrain, staggered waves, an age limit of 13+, and on-site facilities including toilets and refreshments.
Mountain marathon and 10 mile trail race across the Pen y Fan range at Parkwood Outdoors, Merthyr Tydfil, with marked checkpoints and variable mountain terrain.
Gwyn Matthews Rhondda Rollercoaster offers 26.5 and 16 mile routes across the Rhondda Valleys with checkpoints, refreshments, and a completion certificate.
Trail races at Margam Country Park on 23 May 2027 with 5 km, 10 km and half marathon courses, chip timing, finishers' kit and canicross options.
A multi-stage event at Dare Valley Country Park where runners complete five Pure distances within 24 hours, with separate and combined results. Distances include 5k, 10k, 50k, half marathon and marathon.