Trail Running calendar near Merthyr Tydfil 2026-2027

We have found 374 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

A multi-terrain approximately 10 km run near Crediton with mostly off road footpaths, fields and farm lanes. The course is signposted, includes water stations, and returns to Queen Elizabeth School as race headquarters.

A 12 hour Backyard Ultra near Crickhowell on a 4.167 mile loop that mixes trail and tarmac. The first eleven laps are hourly and the final lap is a race to decide the winner.

A single stage trail running event of about 47 miles along the Cotswold Way National Trail from Chipping Campden to Painswick. The route uses public rights of way, features varied terrain, has food stations and live tracking, and a 15 hour..

An hourly-loop endurance event in Wyre Forest where runners repeat a 6.7 km forest loop until the last runner remains or 24 hours elapse; wooden medals are given to all and a wooden trophy to the overall winner.

A single-stage, approximately 102 mile non-stop trail race along the Cotswold Way from Chipping Campden to Bath, with a 32 hour completion limit, GPX route, live tracking, food stations and medical support.

A community event tracing the River Exe from Exmouth to Dulverton, offering a 43 mile ultra and a non-competitive relay in shorter sections. The run raises awareness of the Exe salmon’s decline and includes local music and ceremonial moment..

A 23 mile trail race on the Quantock Hills where runners compete against horses, plus a Pegasus Challenge four person relay. The event is in Over Stowey on 19 September 2026 with free parking and an age limit of 14 and over.

Fan Brycheiniog is a 15.5 km mountain race in Glyntawe with 840 m of climb. The course runs over rough tracks and open fell and requires navigation and competent mountain skills.

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.

A long running trail race in the Doone Valley, Exmoor covering about 16 km (10 miles) over scenic but hilly terrain. The 37th edition limits entries to 250, requires entrants to be at least 16 and uses chip timing.

A single loop 10K trail run at Woodbury Common on natural trails with climbs and stream crossings. All finishers receive medals and top male and female finishers receive prizes including a donated sports massage.

MacTuffX Exeter at Exeter Arena on 20 September 2026 pairs ten set Xercises with repeated 400m or 800m runs, offering Solo, Doubles and Relay entries; all participants must be 18 or over.

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.

A forest marathon and a 20 mile short course around Henley-in-Arden, Warwickshire, starting and finishing at the Memorial Hall, with staffed checkpoints and a hot meal at the finish.

A functional fitness race at Neath Sports Centre on 26 September 2026 featuring ten Xercises plus running, with solo, doubles and five-person relay options, gendered weight divisions and a LITE weight category.

A five-lap ultramarathon in Berkeley, Gloucestershire across 25-27 September 2026, covering about 130 miles and 15,000 ft of ascent with a 24 hour cut off and 120 places, organized from Hamfields Leisure with camping and tracking included.

A 9.6 km fell race in Caerphilly with 396 m of ascent and a partially marked course. The date has moved to September, there is a 10 minute walk from parking to the start, minimum age over 18 and team entries are free.

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.

A forest trail half marathon in late September with an officially measured 13 miles 192.5 yards course, no road crossings, water stations about every 5 km and medals for finishers; organised by the Rotary Club for charity.

A coastal 10 km race from Portishead Open Air Pool with mixed terrain and sea views past Black Nore Lighthouse. The undulating route features a midway water station, chip timing and a finisher medal, with entries limited to 350.

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