Trail Running Calendar United Kingdom 2025-2026

Welcome to the most comprehensive guide to trail races in the UK for 2025-2026! Our curated list features an impressive 1444 trail runs across the enchanting landscapes of Scotland, and Wales. From the iconic trails of London's green outskirts to the rugged terrains near Birmingham, from Glasgow's scenic paths to Liverpool's historic routes, we've got every trail enthusiast covered.

Whether you're a seasoned trail runner looking for your next challenge or a newbie eager to explore the world of off-road running, our calendar is your one-stop solution. Dive deep into the details by searching for a specific location or simply browse through to discover new trail runs. Looking for all running events? Check out the complete Running Calendar United Kingdom on running.life.

The NAV4 Tour de Helvellyn is a challenging winter ultra running event held annually near Helvellyn in the Lake District, starting and finishing at Askham Community Centre. Covering approximately 38 miles with around 2000 meters of ascent and descent, the unmarked route follows mountain trails, brid..

The Nightmare Before Xmas Trail ½ Marathon is a challenging running event set to take place at the Bridgend Miniature Railway Centre. Participants will tackle a mixed terrain course that includes an 8-mile section known as The Hateful Eight, followed by an additional 5 miles filled with obstacles li..

The Winter Solstice Strider is a unique night running event held at the scenic St Ives Estate in Bingley, West Yorkshire. Participants can choose between 5k or 10k distances on an undulating multi-terrain course, completing one or two laps respectively. The event, organized by Sue Ryder Manorlands 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 historic railway line known as the Somerset and Dorset. The course offers scenic views along the River Stour valley, passing charming villages, the restor..

The Elves 11ish Trail is a unique narrative trail race taking place on December 21, 2025, starting and finishing at the Blackwater Leisure Centre. Participants will navigate a circular route of 11 miles, primarily off-road, using written instructions instead of traditional markers. A well-stocked ch..

The Chopwell Woods Christmas Trail Races 2025 is a festive running event held in the scenic Chopwell Woods, near Gateshead. Participants can choose from various distances, including a family 1-mile Santa run, a 4-mile trail, and an 8-mile race, suitable for different age groups and fitness levels. T..

The Winter Wanderlust 50km is an exhilarating ultra-trail race set against the stunning winter landscape of Kent. Participants will embark on a scenic journey from Detling to Wye, traversing the North Downs Way, with a mix of challenging climbs and breathtaking views. The event features well-stocked..

The A Christmas Carol Bobble Hat Run, organized by Saturn Too, takes place in the scenic Dare Valley Country Park, Aberdare, Wales. This inclusive event welcomes participants of all abilities, including walkers, and features a 7-hour time challenge where runners can choose their distance, starting f..

The Festive Friston Forest Night Trail Run is a unique 5-mile running event set in the scenic Friston Forest, taking place on December 22, 2025. Participants will navigate the course using Strava GPX on their devices, with a tail runner to ensure safety. The event encourages festive spirit, featurin..

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half marathon with 3.5 laps. The event features a supportive atmos..

The Winter Woolly 10km is a popular trail running event held annually on December 24th at Elstree School in Upper Woolhampton, Berkshire. Now in its sixth year, the race features a scenic multi-terrain course covering 10 kilometers with 80% off-road paths, including lanes, footpaths, trails, woodlan..

The Wansfell Fell Race, organized by Ambleside AC, is a challenging running event set in the scenic Lake District. The race features a 3.14 km (2.1 miles) out-and-back route with a significant climb of 405 meters (1329 feet). Starting from Stock Ghyll Lane, participants face a steep ascent followed..

The Plain Crazy Winter 12.5 Mile run is a challenging event set in scenic and potentially snowy conditions, taking place on December 28, 2025. Participants can expect a hilly course that tests their endurance, with a 3.5-hour cut-off time. The event supports The Royal British Legion Poppy Appeal and..

The Wormstones Fell Race will take place in Glossop on Wednesday 31 December 2025.

January 2026

The LDWA's Hangover Hike is an annual winter walking and running event held in Dewsbury, West Yorkshire, starting and finishing at The Leggers Inn. Participants can choose from three circular routes of 10, 17, or 21 miles, all converging at a main refreshment checkpoint, allowing flexibility to shor..

The Knacker Cracker is renowned as "Britain's toughest 10k," featuring a challenging course that includes significant elevation changes, with a total ascent of 473 meters. The race, set in the scenic surroundings of Box Hill and Denbies Vineyard, offers a unique experience for runners, including a k..

The Punk Panther Green Gateways will take place in Otley on Thursday 1 January 2026. You can run between 13 and 34 miles.

The Bell Challenge Day 5, organized by Running Events Devon, takes place on January 2, 2026, in Exmouth, Devon. This 7-hour timed event features a mainly flat, 5.3 km out-and-back course along a scenic, disused train line, fully paved and accurately measured as a road race. Participants of all abili..

The Walter Raleigh Round Half Marathon is a scenic 13.6-mile race starting and finishing in Budleigh Salterton, England, the birthplace of Sir Walter Raleigh. The course traverses quiet back lanes, unsurfaced county roads, hidden footpaths, the Otter Valley, High Peak, the Jurassic Coast, and a dism..

The Hardmoors 30 is a challenging 31-mile winter ultramarathon held in North Yorkshire, England, starting and finishing at Fylingdales Village Hall in Robin Hood’s Bay. The circular route traverses scenic coastal and moorland paths, including the Cleveland Way cliff tops and the Cinder Track, passin..