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.
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.
Three days of walking and trail running in remote parts of Exmoor National Park, combining the historic Perambulation and Man vs Moor races with evening talks and screenings.
Inflatable 5K Cardiff on 26 June 2027 offers lap-based inflatable obstacle runs from 2.5k to 15k with music zones, medals and family and group ticket options.
Off road routes across Exmoor with 5 km, 10 km and 10 mile options, natural obstacles, an optional open water swim and on course support.
July 2027
Multi distance trail event on the Gower Peninsula in South Wales featuring a 100 km figure of 8 plus 75 km, 50 km, 25 km and 10 mile options with camping and staffed rest stops.
Trail races on the private Merthyr Mawr Estate with a 12K, half marathon and marathon across dunes, river crossings and the Glamorgan Heritage Coast.
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.
Trail ultramarathon across the Brecon Beacons near Abergavenny on 24 to 25 July 2027 offering distances from 12km to 100 miles and UTMB index status.
August 2027
Traffic free 5K and 10K trail races at Wimbleball Lake with junior and canicross options, set within a multisport festival on Exmoor.
November 2027
A 30 miles mountain ultra across the Brecon Beacons with steep climbs, technical descents and mandatory kit checks in Georgetown, Merthyr Tydfil on 6 November 2027.
July 2028
A single day ultra of about 39.7 miles along National Cycle Route 8 from Glasbury to Merthyr Tydfil. Limited field, mandatory kit and 4.0 mph cut offs; finishers receive an Afanc medal and champions receive bespoke trophies.
A point to point 34.8 mile ultra from Merthyr Tydfil to Barry Island following National Cycle Route 8. It is day six of the MTC CYMRUN series and uses preset cut offs based on a 4 mph minimum average speed.
November 2028
Llyn y Fan is an 8.8 km fell race with 610 m ascent on 14 November 2028, entry £7 via Fabian4, age over 16 and a 50 runner limit.