Trail Running calendar near Merthyr Tydfil 2025-2026

A Nightmare Before Xmas Trail ½ Marathon takes place at the Bridgend Miniature Railway Centre, Fountain Road, Aberkenfig, Tondu, Bridgend CF32 9BZ. This roughly 13-mile trail challenge combines The Hateful Eight 8-mile route with about 5 extra miles of mixed terrain, including mud, water, a killer h..

The Slow and Dirty is a festive-themed 19-kilometer trail race held in Sturminster Newton, Dorset, following a level, hard-surfaced route along a former railway line known as the Somerset and Dorset. Despite its name, the course is fast and clean, offering a scenic run through the Stour valley, pass..

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 Plain Crazy Winter is a challenging 12.5-mile trail run held in Warminster, known for its hilly, cold, and scenic course that can be windy, snowy, and desolate. The event supports The Royal British Legion Poppy Appeal and offers prizes for top male and female finishers across various age categor..

The Bell Challenge Day 5, organized by Running Events Devon, takes place on January 2, 2026, in Exmouth at Capel Lane. This 7-hour timed event features a mainly flat, accurately measured 5.3 km out-and-back course on a scenic, disused train line surfaced entirely with tarmac, classifying it as a roa..

The Walter Raleigh Round Half Marathon takes place in Budleigh Salterton, the birthplace of Sir Walter Raleigh, a coastal town in Devon. The event offers a Half Marathon (13.6 miles) and a Third Marathon (8.5 miles). The route winds along quiet back lanes, unsurfaced county roads, little-known footp..

Haldon Night is a winter night-time trail running event held at Haldon Forest Park, near Exeter (Bullers Hill, Kennford, EX6 7XR). The program features a single-loop 10K and a 5K for adults, plus 1K and 2K races for kids (with adults able to run with children). There’s also a 10K canicross option.Ra..

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...

Pagan Trails is a challenging running event set in the picturesque Dartmoor region, specifically in Chagford. Participants can choose between two distances: a Marathon of over 28 miles and a Half Marathon exceeding 14 miles, both featuring significant elevation gains. The routes take runners past an..

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..

Pagan Midwinter Marathon, organised by OuterEdge Events, takes place at Chagford Cricket and Football Club in Devon (TQ13 8AS). Also known as PAGAN TRAILS, the event runs in midwinter on Dartmoor’s north-eastern edge, threading through stone circles and other pagan sites. The programme offers two ch..

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 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 Dalwood 3 Hills is a popular multi-terrain running event held in Dalwood, near Axminster, Devon. Returning in 2026, it offers three distances: a challenging 10-mile course featuring hills, mud, and river crossings; a 5km "Dalwood Dash" with similar terrain; and a new 3km "Dalwood Doddle" fun run..

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..

Dartmoor Winter Traverse is a fully supported 50 km route across Dartmoor’s remote moorland, with a 30 km Princetown to Meldon option. Organized by Climb South West, it is open to runners and walkers, and takes place in February, featuring a winter atmosphere with rough, off-road terrain and limited..