Cardiff Bay
Trail Running Calendar near Cardiff Bay 2026-2027
Explore the top trail runs near Cardiff Bay for 2026-2027! We've gathered 101 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
November 2026
Trail Half Marathon Wales runs in Margam Country Park and Forest on 14 November 2026, offering a fully marked half marathon and 10k on forest trails with checkpoints, safety cover, and included car 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 fell race of 5.7 km with 485 m of climb on Blorenge near Llanfoist, Abergavenny. Mostly unmarked up-and-down route with steep technical terrain; basic navigation and full kit are recommended.
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.
The final race of the 2026 RTT Series takes place in Afan Forest with separate 5 km and 10 km routes from Bryn Bettws Lodge. The event features chip timing, finisher medals, marked and marshalled routes and water stations.
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
A trail half marathon near Bridgend with mixed terrain, an initial eight mile section plus about five extra miles, limited to 70 runners and a prize for Christmas fancy dress.
A winter hill race on Skirrid with a 5.7 km course and 450 m ascent from Skirrid Inn, £10 entry and 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.
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.
A free, untimed community run along the canal between Bridgwater and Taunton with 14 and 7.5 mile options. Registration is required and basic medical cover will be available.
January 2027
A January off road 9.6 mile run across trails, fields and woodland with about 80 percent off road terrain. The event uses chip timing, has one water station at Littleton upon Severn and a 2.5 hour expected run time limit.