Tongwynlais
Trail Running Calendar near Tongwynlais 2026-2027
Explore the top trail runs near Tongwynlais for 2026-2027! We've gathered 110 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
December 2026
A just over 6 mile December dune race at Merthyr Mawr with a midrace mulled wine and mince pie stop and organised charity fundraising.
Skirrid Xmas Hill Race is a 5.7 km fell race with 450 m ascent near Llanvihangel Crucorny on 19 December 2026; entry £10, no entries on the day.
Two festive runs of 2.5 km and 5 km at Dare Valley Country Park with medals, goody bags, refreshments and free parking.
A multi-distance timed challenge at Dare Valley Country Park with lap-based distances, themed medals, bobble hats, aid stations and on-course support.
Timed lap based run at Barry Sidings Country Park offering distances from 5 km to ultra on a 5.3 km tarmac lap with a 7 hour limit.
January 2027
Lap-based timed event in Rhydycar, Merthyr Tydfil with a 5.3 km tarmac lap, distances from 5 km to ultra, timed over seven hours and a no-medal entry option.
A midwinter mixed terrain 6.4 miles off-road race around Cosmeston Lakes Country Park organised by Penarth and Dinas Runners under Welsh Athletics licence.
Lap-based timed event on 23 January 2027 at Parc Taf Bargoed offering distances from 5 km to ultra with a 7-hour time limit and flexible rock-up starts.
A seven hour time challenge at Dare Valley Country Park offering distances from 3 km to 50 km, with medals, aid stations and vegan goody bags.
A 9 km fell race with 550 m ascent in the South Wales Winter Hill Series, requiring navigational skills and mandatory full kit; minimum age over 16.
Winter ultra in the Brecon Beacons on 30 January 2027 offering 75 mile and 100 mile routes starting from Penderyn Square in Merthyr Tydfil.
February 2027
A Backyard Ultra near Crickhowell on 6 February 2027 featuring repeated 4.2 mile loops, a reversed final race lap, trophies for final lap winners and medals from 32 miles.
Timed multi-lap run in Parc Taf Bargoed with 5.3 km laps and distances from 5 km to ultra, offering bespoke medals or a lower cost no medal entry.
Mountain to city winter running events from Brecon to Cardiff featuring a 75 km ultra and a 26.2 mile marathon with unmarked mountain navigation and checkpoint support.
A one way, fully marked 70k ultramarathon along the Taff Trail from Brecon to Nantgarw. The route moves from mountain landscapes to former industrial valleys and includes coach transfer to the start, checkpoints and live GPS tracking.
An approximately 8-mile multi terrain race around Sorbrook and Sluvad near Cwmbran with marshalled routes, medical cover, goody bags and age-category prizes.