Trail Running calendar near Builth Wells 2025-2026

A Nightmare Before Xmas Trail ½ Marathon, staged by Mad Running Junkies, takes place at the Bridgend Miniature Railway Centre in Aberkenfig, Tondu, near Bridgend (CF32 9BZ). The course blends the Hateful Eight 8‑mile route with a further 5+ miles of challenging trail, totaling around 13 miles of mix..

The Christmas Carol Bobble Hat Run, organized by Saturn Running, takes place in the scenic Dare Valley Country Park in Aberdare, Wales. This inclusive event welcomes runners and walkers of all abilities. Participants can choose their distance within a 7-hour time challenge, with a minimum of 3km and..

Midwinter Mortimer Trail (MMT) Ultra is a self-navigating trail challenge following the Mortimer Trail from Ludlow Castle in Shropshire to Kington in Herefordshire. It offers two routes: a 30-mile Ultra and a Croft 15 of about 16 miles. The course is a no-frills, mixed-terrain trek through the March..

The Cardiff Trail 10k is an exciting running event set against the stunning backdrop of Castell Coch. Scheduled for January 18, 2026, this newly introduced race offers participants a unique blend of competition and natural beauty, making it an ideal choice for both experienced runners and newcomers...

Saturn Running's "Spice Up Your Run - Wales" is a fun and inclusive running event held at Dare Valley Country Park in Aberdare. Participants can walk or run a minimum of 3km, with options to complete laps of approximately 7km each, allowing distances up to 50km, including half-marathon, marathon, an..

The Holly Challenge is a multi-distance race organized by How Hard Can It Be Events, held at Burroughs Bank, Lightmoor, Telford, TF4 3QS, within the Lightmoor Nature Reserve. Runners can choose 5K, 10K, half marathon, or marathon distances. The course follows scenic lanes around Lightmoor, offering..

The Icing on the Cake is a trail running event held in the scenic Shropshire Hills, starting and finishing at Carding Mill Valley near Church Stretton. Participants can choose between a half marathon (13.1 miles) featuring one loop through rugged countryside, or a full marathon (26.2 miles) which in..

The Westonbirt Arboretum Winter Night Race is an exciting running event set in the stunning National Arboretum, featuring over 2,500 tree species. Participants can choose between 5km and 10km routes, which showcase the arboretum's diverse landscapes and solid terrain, providing a unique blend of tra..

The Cannock Chase Forest race offers runners a choice of 20, 15, 10, or 5-mile trail distances through the scenic and undulating forest paths of Staffordshire. Known for its beautiful and challenging course featuring hills, the event suits all abilities, from novices to seasoned athletes, making it..

The Westonbirt Arboretum Winter Day Race is a scenic running event set in the stunning National Arboretum, featuring over 2,500 tree species. Participants can choose between a 5km or 10km race, with routes that showcase the beauty and diversity of the arboretum's landscape. The event is designed to..

Trails & Tarmac Backyard Ultra – Winter, organized by Limitless Trails, takes place near Crickhowell in the Black Mountains, Powys (GB). A 4.167-mile loop blends trail and tarmac, with one gradual climb and a short steep section; the rest is relatively flat for speed. Backyard Ultra rules apply: eac..

The Winter Railway Ultra is a multi-distance running event held along the scenic banks of the River Severn between Ironbridge and Bridgnorth, UK. The course follows a disused railway line, offering outstanding river views and glimpses of the area's industrial heritage. Participants can choose from d..

Two Tunnels Races in Bath, UK, organized by Relish The Great Outdoors, offer a unique underground running experience alongside city scenery. The courses pass through the Devonshire Tunnel (408m) and the longer Combe Down Tunnel (1672m), both well-lit and surfaced as a shared-use path—the longest und..

The Ironwood Challenge, organized by Nailsea Running Club, is a trail race near Long Ashton, North Somerset. The six-mile course runs through woodland, fields and forest, with sections that are often muddy. It is fully marked and marshalled, and chip timing is included for the first year.Off-road sh..

The St David's Day Dragon Run 2026, organized by Saturn Running, takes place in the scenic Dare Valley Country Park in Aberdare, Wales. This 7-hour time challenge allows participants to run distances of their choice, starting from a minimum of 3km. The course features well-maintained footpaths with..

The Brecon to Cardiff Classic is a 70-kilometer ultra running race following the scenic Taff Trail from Brecon in the Brecon Beacons National Park to Cardiff. Now in its 12th year, this fully marked, one-way race features diverse landscapes, including dramatic mountains, waterfalls, reservoirs, and..

Brecon to Cardiff Xtreme is a winter mountain ultramarathon, a 75-km linear challenge from Brecon to Cardiff (about 47 miles) with roughly 2,700–2,800 m of ascent, including 11 summits such as Pen y Fan, Cribyn and Fan y Big. The Taff Xtreme Marathon is the second half, a 26.2-mile leg from Merthyr..

The Winter GMU is an ultra around Bristol's Community Forest Path, offered in two distances: 45 miles and 30 miles. The winter course heads anticlockwise, known for mud, with four checkpoints, chip timing, and GPX navigation. The 45-mile route starts and finishes at Ashton Park School in Bristol; th..

The Hateful 8 Ultra Loop is a multi-loop endurance running event held at Bridgend Miniature Railway in Aberkenfig, Bridgend, South Wales. Each loop covers about 9 miles, and participants aim to complete as many loops as possible within an 8-hour window. The course is a mixed-terrain route featuring..

The Loggerheads Trail 5k & 10k is a popular trail running event set to take place in March 2026 at Loggerheads Country Park. Participants can choose from three race options: a 5k Trail, a 5k Canicross Trail, and a challenging new 10km route. The courses feature a variety of terrains, including river..