Trail Running calendar near Merthyr Tydfil 2026-2027

We have found 321 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

A single stage, approximately 102 mile trail race along the Cotswold Way from Chipping Campden to Bath, with a 32 hour completion time and route markers, support stations and medical cover on the course.

A river-centred event on 19 September 2026 combining a 43 mile ultra and a multi-leg team relay along the Exe Valley Way, highlighting the Atlantic salmon with community music, symbolic baton relays and partnerships with river conservation..

A 23 mile trail race across the Quantock Hills at Greatwood, Over Stowey in 2026. The event also offers the Pegasus Challenge four person relay; participants must be 16 or older and entry fees are GBP 44.04 to 49.46.

A hilly trail event in the Cothi valley offering a 13 mile half marathon, a 6.5 mile alternative and a kids race, held at Pumsaint Village Hall with online entry and published route and results.

Experience a historic ten mile trail race through the scenic Doone Valley in Exmoor. This hill focused course offers stunning views and commemorative medals for all finishers in a small field limited to 250 participants.

A single loop *10 km* trail at Woodbury Common with short climbs and stream crossings. Entry is for those aged 16 and over and includes a finisher medal plus prizes for top men and women.

MacTuffX Exeter on 20 September 2026 offers solo, doubles and relay formats built from ten 400 m or ten 800 m repeats. Entries are for adults only and fees vary by category and team size.

Three long distance trail races along the Wales Coast Path in the Gower AONB, with routes that cross beaches, cliffs, marshes and farmland. The event offers navigation support, checkpoints, GPS tracking and finishers medals.

RTT Margam Trail at Margam Country Park offers 5 km and 10 km trail routes on woodland paths with views of Margam Castle. The event includes chip timing, water stations, marshalled routes and parking included with entry.

The Forest of Dean Autumn Half Marathon is a measured 13 miles 192.5 yards race on forest trails with no road crossings. Organised by the Rotary Club of the Royal Forest of Dean, the event raises funds for local and national charities.

A coastal 10 km race from Portishead Open Air Pool featuring mixed terrain, a mid-race climb with a water station, a landmark section by Black Nore Lighthouse and a fast finish along the seafront.

October 2026

A continuous 100 mile race around Dartmoor on the waymarked Dartmoor Way, featuring roughly 4000 m of ascent, six indoor checkpoints with hot food, GPS tracking and a 34 hour time limit in variable late autumn conditions.

A six hour timed event on a 4.4 km loop in the Lower Otter valley. Solo and pairs options, aid station every loop, with cafe and showers at Budleigh Salterton Cricket Club.

Self navigation trail event from Budleigh Salterton Cricket Club offering approximate 21 km, 42 km and 53 km courses. Solo or pairs, open to runners and walkers, with GPS tracking and on site parking, cafe and showers.

A 7 hour Time Challenge at Dare Valley Country Park where runners choose their distance. Finishers from 3km receive a themed medal, doughnuts and a goody bag, with aid tables and vegan options on course.

Trail half marathon in the Quantock Hills at Kilve Court, Somerset on 04/10/2026. The route includes technical trails, climbs, moorland and stream crossings; two feed stations, marshals and UTMB index status are provided.

Test your endurance at MacTuffX Brierley Hill in October 2026. Choose between 400m and 800m intervals in solo, double, or relay formats for a unique racing experience. This event is open to all participants aged 18 and over.

Bristol Epic Trail Sponsored By GORUCK is a trail running event at Ashton Court Estate in Long Ashton, Bristol on Sun 4th Oct 2026. Entry details, reviews, photos, course maps, and results are provided for the event.

Inflatable 5K in Cheltenham on Saturday 10 October 2026 is a five kilometre obstacle course made of inflatables. Recent listings show a five star rating and 34 bookings in the past week.

A fully marked 32 mile trail run in the Cambrian Mountains, based at Camp Plas with exclusive camping and support, limited to 100 runners and a 14 hours cut off for the main route.

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