Trail Running calendar near Merthyr Tydfil 2026-2027

We have found 273 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

A fell race in North Pembrokeshire on Sat 29 Aug 2026 covering 8 km with 330 m of climb. Entries are accepted in advance and on the day, and junior Mochyn du races have entry on the day only.

The Plum 10k is Pershore Plum Plodders club's 10 kilometre race in Pershore, Worcestershire, with results archived back to 2016. The next edition is scheduled for 30 August 2026.

A fell race in Machen of about 7 km with 365 m of ascent, with registration at Machen Welfare Ground and start and finish on Church Street. Entry is £7 on the day and participants must be over 18.

September 2026

A 30-mile ultra marathon on the circular Rhymney Valley Ridgeway Walk in South Wales. Experience varied trails, significant elevation, and supported checkpoints on this September adventure.

Battle of the Borders offers three trail distances on the Shropshire Hills, from a 10K to a full marathon. The single-lap course starts and finishes in Carding Mill Valley, with fully marked routes and required runner supplies. Participants..

A running event at Westonbirt Arboretum on 5 September 2026 with 1 mile, 5 km and 10 km routes through varied tree collections; organised by Relish The Great Outdoors and currently showing tickets as sold out.

Explore the rugged Welsh landscapes at the RunThrough Snowdonia Sea2Sky trail races. Choose from 12k, 25k, or 54k distances on a route from Barmouth beach to Cadair Idris summit. Enjoy chip timing, a themed medal, and free race photos.

A long-distance walking and running event crossing Wales over a 45 mile linear route to be completed within 18 hours, presented as a weekend package with accommodation, coach transport, refreshment stops and route maps.

Join the Ross on Wye Riverbank Run on 6 September 2026 for scenic multi terrain 5k, 10k and a family fun 500m along the River Wye. Flat, fast course, chip timing and medals for all finishers make it perfect for racers and families alike.

Join the Carnival Chase on 6 Sep in Warminster Town Park for 10K, 3K and a 1.2K family, wheelchair and buggy fun run. Enjoy a scenic country lane course by the boating lake, medals for all and a lively event village.

Take on the Stretton Skyline, a scenic yet demanding 30.5 km fell race around Church Stretton with 1357 m of climb and panoramic Shropshire Hills views. Pre entry only, finishers enjoy a tasty goody bag.

Choose from 12, 18, or 26-mile routes through the Shropshire Hills Area of Outstanding Natural Beauty. Starting at Wistanstow Village Hall, the event includes meals and full support. It's a popular challenge walk with an entry limit of 160.

This eight-mile community event from Barnstaple Pannier Market to Crow Point in North Devon features an eight-mile course and a children's fun run. It supports the charity Families in Grief and includes an event village at the finish.

Race 47 miles along the Cotswold Way from Chipping Campden to Painswick, traversing the rolling hills of the Cotswolds Area of Outstanding Natural Beauty. This licensed continuous trail challenge runs under UK Athletics and TRA rules.

UTMB Index

A 102-mile non-stop trail run along the entire Cotswold Way National Trail from Chipping Campden to Bath. Runners have 32 hours to complete the hilly route, navigating by the trail's iconic acorn markers. The event includes tracking, suppor..

UTMB Index

A community run along the Exe Valley Way from Exmouth to Dulverton offering a 43 mile ultra and a team relay with shorter sections. The event highlights Exe salmon and works with river restoration partners.

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.

Three coastal trail races offer a journey along the stunning Gower Peninsula on the Wales Coast Path. Choose from 50-mile, 34-mile, or 23-mile options, each finishing at Mumbles Cricket Club. The event provides comprehensive support with mu..

Take on the trails of Margam Country Park. This event offers both a 5K and a 10K route on scenic paths, with car parking and a finisher's medal included for all participants.

This autumn half marathon takes place on scenic forest trails in the Forest of Dean. The course features no road crossings and offers a unique, slightly hilly route. Organized by the Rotary Club for charity, it provides chip timing and a me..