Cardiff Bay
Trail Running Calendar near Cardiff Bay 2026-2027
Explore the top trail runs near Cardiff Bay for 2026-2027! We've gathered 100 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
A pancake-flat 10 km out and back along the Brecon and Monmouthshire canal between Gilwern and Llangattock, set in the Brecon Beacons National Park. Finishers receive a medal, there is a drink station at 5 km, and entries are online only.
A social 5K in Newport with music and mobile speakers, meeting and finishing at banc coffee & records; tickets are free and under 14s require a parent or guardian.
Trail runs of 5 km and 10 km around Fyne Court Estate in the Quantock Hills AONB with optional wooden finisher medals and a waste-reduction policy.
Join the Crook Peak Cake Race in Axbridge on Wed 19 Aug 2026 for a spirited 3 mile fell challenge across stunning Somerset hills, finishing with cake and community cheer. On the day entry available for runners aged 14 and up.
A 9.8 km traverse near Pontypool with a 291 m climb, junior race distances and three-person team entries.
September 2026
A new 15 mile trail event in September 2026 on the Rhymney Valley Ridgeway Walk, with 2,267 ft of ascent, mostly off-road terrain, one fully stocked checkpoint and organised entry support from Rudry to Parc Penalta.
Run as far as you like at Alice in Runderland, a timed multi lap event at Parc Taf Bargoed with flexible start times and on course support. Choose from one lap up to marathon and earn a bespoke finisher medal.
A long, non-commercial fell race in the Black Mountains with a 27.4 km route and 1586 m of ascent. The event uses five checkpoints, requires full navigational kit, and operates on open access land with no on-course water provided.
A 12km canitrail and trail run at Halo Ogmore Valley Life Centre in aid of PAPYRUS on 13 September 2026, entry £26, dogs welcome.
A 12 hour Backyard Ultra on a 4.2 mile loop near Crickhowell in the Black Mountains. The final lap is run in reverse as a sprint to decide male and female winners; medals are awarded for 32 miles or more.
A 23 mile trail race across the Quantock Hills pitting runners against horses, with a Pegasus Challenge four person relay in Over Stowey on 19 September 2026.