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 1464 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 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 The Seven Sins Run & Immortal Sinner will take place in Blakeney from Saturday 27 December 2025 to Monday 29 December 2025.

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 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 takes place at Denbies Vineyard in Dorking, with a new route introduced in 2025 that avoids ecologically sensitive area..

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

The Hardmoors 15 is an 18-mile circular running event set in the scenic North York Moors, starting and finishing at Robin Hood's Bay. Scheduled for January 3, 2026, participants have an 8-hour time limit to complete the course, which features a total ascent of 1,700 feet. The race includes several c..

The Hardmoors 30 is a challenging circular race covering approximately 30 miles, set in the scenic North York Moors. The route includes picturesque locations such as Robin Hood's Bay, Ravenscar, and Cloughton Wyke, featuring both cliff-top paths and the Cinder Track. The event is scheduled for Janua..

The Walter Raleigh Round Half Marathon is a scenic running event that takes participants through the picturesque countryside of Budleigh Salterton, the birthplace of Sir Walter Raleigh. The half marathon covers a distance of 13.6 miles, featuring a mix of quiet lanes, unsurfaced roads, and footpaths..

The Loch Morlich Running Festival is an exciting annual event taking place on January 3, 2026, in the picturesque Glenmore Forest, concluding at the beautiful Loch Morlich beach. Participants can choose between two trail distances: 5.6KM and 11.2KM, with trail shoes recommended. The festival promote..

Dark Skies Surrey Hills is an exhilarating night trail running event set in the picturesque Surrey Hills, featuring races of 10 miles, 10K, 5K, and kid's distances. Participants navigate through enchanting woodlands under the stars, illuminated by headlamps, offering a unique challenge amidst the fr..

The Country to Capital Ultra Marathon is a renowned 43-mile race that marks the beginning of the ultra running season. Set in the picturesque Buckinghamshire countryside, the course takes participants through diverse terrains, including trails and canal towpaths, culminating near the Little Venice c..

Endurancelife's North Cornwall event offers a thrilling trail running experience set against the stunning backdrop of the rugged coastline. Based in Polzeath, participants can choose from four distances: 10K, Half Marathon, Marathon, and Ultra, each featuring significant elevation gains and breathta..

UTMB Index

The Hamsterley Forest Winter Trail Races feature a Half Marathon and a 10k event, set in the picturesque Hamsterley Forest, County Durham. Participants will navigate through scenic trails and tracks, offering a mix of terrain that is both challenging and rewarding. This event is an excellent opportu..

The Winter Wipeout! is a challenging half marathon event set in the depths of winter, taking participants to the summit of Hedgehope and back. Designed to test runners' resilience, the course is marked and supported by marshals, ensuring safety despite potentially harsh weather conditions, including..

The Skipton Sweetie Skedaddle is a scenic running event held along the Leeds and Liverpool Canal, offering a range of distances from 5K to Ultra. This out-and-back race is designed for runners of all abilities, featuring a flat and even towpath. Participants can enjoy well-stocked feed stations and..

ZigZag's "WTF - Where's The Finish?" is a unique running event taking place at Brandon Country Park in Suffolk. Participants can choose between a 6-hour or 4-hour race, covering a 5.3k multi-terrain loop through scenic forest paths. This event caters to runners of all levels, from beginners aiming f..

The Montane Winter Spine is a challenging non-stop endurance race covering 268 miles along the Pennine Way, starting from Edale in Derbyshire and finishing in Kirk Yetholm, Scottish Borders. Known as Britain's most brutal endurance race, participants have 168 hours to complete the course, which incl..

UTMB Index

Haldon Night is a winter night running event held annually at Haldon Forest, featuring a variety of trail races suitable for all ages and abilities. Participants can choose from 10K, 5K, 2K, and 1K courses, with the 10K and 5K offering single loop routes. The event includes special races for childre..