Swansea
Trail Running Calendar near Swansea 2026-2027
Explore the top trail runs near Swansea for 2026-2027! We've gathered 56 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
May 2027
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.
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.
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.
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.
September 2027
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.