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Trail Running Calendar near Mumbles 2026-2027

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Explore the top trail runs near Mumbles for 2026-2027! We've gathered 46 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

August 2026
A 7 hour time challenge at Dare Valley Country Park with distances from 3 km up to 50 km, a cupcake magnet finisher medal, a baking competition, aid stations with vegan options and goody bags for finishers.
Two trail races through the mountains of Afan Forest Park, about 6.5 miles or 10.5 miles with significant climbs. Online entry, chip timing, marshalled route, finishers receive a t shirt and medal.
September 2026
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 scenic, hilly trail half marathon in the Cothi valley near Pumsaint, offering a 13 mile race, a 6.5 mile alternative and a kids race, based at Pumsaint Village Hall on 20 September 2026.
Trail race in the Doone Valley, Exmoor covering 16 km (10 miles) with hilly terrain, chip timing, a finishers' medal and a 250 runner limit.
Three coastal trail races on 26 September 2026 around the Gower Peninsula offer routes of 50, 34 and 23 miles along cliffs, bays and coastal paths. The event is self navigated with checkpoints, GPS tracking and coach transfers to starts.
Trail race at Margam Country Park offering 5 km and 10 km routes through woodland with castle views. The event features chip timing, water stations, a finisher's medal and parking included with entry.
October 2026
Repeat a 9 mile mixed-terrain loop at The Nature Centre, completing as many laps as possible within an eight hour limit.
A 7 hour Time Challenge at Dare Valley Country Park with flexible distances from 3 km to ultramarathon options. Finishers receive a themed medal, distance pins and refreshments including doughnuts and ice cream.
A seven hour Time Challenge at Dare Valley Country Park offering distances from 3km to 50km, themed finisher medals and distance pins, on course aid with vegan options, and basic venue facilities including toilets and free parking.
Join the Aberfan Memorial Run in Merthyr Tydfil to honour the 1966 victims and support the Aberfan Memorial Charity. Choose 5 km to ultra on a scenic tarmac loop along the Taff Trail with flexible start times and official timing.
Coastal trail running at Oxwich Bay on 18 October 2026 with 21 km, 10 km and 5 km options plus chip timing and finisher medals.
Timed lap event at Barry Sidings Country Park with flexible start times, distances from 5 km to ultra on a tarmac out and back course and a medal or no medal option.
November 2026
Coastal ultra events on the South West Coast Path offering self-navigation and GPS tracking across distances from 38 km to 110 miles.
Trail races at Oxwich Bay feature 10K, half, marathon and ultra courses across cliffs, dunes, woodland and beaches as part of the Endurancelife season.
30 mile ultra through the Brecon Beacons, climbing to Pen y Fan with 3750 ft gain, five checkpoints and a six hour mid race cut off; limited to 200 entries on 7 Nov 2026.
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 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.
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