Cardiff
Trail Running Calendar near Cardiff 2026-2027
Explore the top trail runs near Cardiff for 2026-2027! We've gathered 99 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
November 2026
Mixed trail, mountain, canal and road runs around the Brecon Beacons on 7 November 2026, offered at 50 miles, 26 miles and 13 miles.
A 30 mile mountain ultra across the Brecon Beacons with five checkpoints, mandatory kit and 3750 ft / 1143 m of ascent.
Fully marked trail races at Margam Park including a half marathon and a 10k, running through woodland, parkland and the deer park with coastal views; entries include parking, timing, a medal and download photos.
Trail Half Marathon Wales at Margam Country Park on 14 November 2026 features fully marked forest races over 21.1 km and 10.2 km with checkpoints and included parking.
Timed lap event in Cardiff Bay offering flexible start times and distances from one 5.3 km lap up to multi lap ultra within a 7 hour limit.
A Movember charity run at Ashton Court Park offering 1.5k, 5k, 10k and half marathon options with chip timing, medals and headbands, mixed path and trail terrain, some hilly sections, and on course refreshments.
The Smurf Run at Dare Valley Country Park is a seven hour Time Challenge on well maintained park paths, with distances from 3 km up to 50 km. Finishers receive themed medals, distance pins and a goody bag with vegan options.
Off road hill race around Brent Knoll in Somerset on 22 November 2026, about 6 miles with steep climbs, mud and panoramic views; finishers receive a unique medal.
A short 5.7 km fell race at Blorenge near Abergavenny with steep, technical ascent and descent and basic navigation required.
Timed multi-lap event at Parc Taf Bargoed offering distances from a single 5.3 km lap up to an ultra, with bespoke medals and a no medal entry option.
Final race of the 2026 RTT Series in Afan Forest offering 5 km and 10 km trail routes with chip timing, medals and water stations at Bryn Bettws Lodge.
A lap based road event at Rhydycar, Merthyr Tydfil, on a 5.3 km AUKCM certified tarmac circuit along the Taff Trail. Runners choose how many laps to complete within a seven hour limit and can opt for a no medal entry.
December 2026
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.
Festive family-friendly 2.5 km and 5 km runs at Dare Valley Country Park with medals, goody bags, refreshments and free parking.
A 7 hour Time Challenge at Dare Valley Country Park in Aberdare offering distances from 5 km to ultra, themed medals, a bobble hat and on-course aid stations.