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 1437 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 Hermitage Trail Runs feature a 10km, 5km, and a 1.2km festive fun run, taking place at the Hermitage of Braid and Blackford Hill. The event is designed for participants of all ages and abilities, with clearly marked and marshaled off-road routes. The 5km and 10km runs follow a single lap course..

The Serpent Trail Ultra Run is a 30-mile trail event held in Haslemere, Surrey, designed as an accessible introduction to ultra running. Participants will explore some of the best sections of the Serpent Trail and Sussex Border Path, passing through scenic heathlands, ancient woodlands, and rolling..

DirtRun In The Dark is an exciting 10km off-road running event set in the scenic Wyre Forest at the Callow Hill Visitor Centre. Participants will navigate a two-lap course through tracks and trails under the cover of darkness, making headlamps or torches a mandatory requirement. Open to runners aged..

Night on the Edge is an exciting night running event featuring a Half Marathon, 10K, and 5K race along the stunning Cornish SW Coast Path. The course starts at Cremyll, traverses through Cawsand, and reaches Rame Head Chapel for the Half Marathon. Participants can also join Canix races, which involv..

The Wittering Beach Run is a popular running event set against the stunning backdrop of West Wittering's natural beaches, which have earned Blue Flag Status. Participants can choose from three distances: 15km, 10km, and 5km, all of which feature picturesque views of Selsey Bill, the Isle of Wight, a..

The Maverick Original Oxfordshire 2025 is a trail running event held at Stonor Park in Oxfordshire. Taking place on November 29, 2025, it offers three routes: 22 km, 12 km, and 7 km, through the historic estate and the Chilterns Area of Outstanding Natural Beauty. The course features challenging cli..

The Maverick Exposure Lights Dark Oxfordshire 2025 is a nighttime trail running event held at Stonor Park in Oxfordshire. Participants can choose from three challenging routes: 7 km, 12 km, or 17 km, all set within the scenic estate known for its wildlife, including fallow deer and wallabies. The ev..

The Box Hill Vertical KM is a guided trail running event focused on challenging hills in Surrey. Designed to hit over 1,000 meters of elevation in a short distance, the route traverses woodland, heathland, and open fields, featuring technical climbs and scrambling sections. The run emphasizes a stea..

The Stanza Stones Winter Edition is a 24-hour ultramarathon covering 50 miles along a linear route from Marsden to Ilkley in West Yorkshire. Participants will traverse the scenic South Pennines moorland, passing six Stanza Stones inscribed with poems by Simon Armitage, all themed around water. The e..

The Riverside Marathon & Half Marathon is a scenic running event taking place along the River Thames, featuring a UKA certified route. Scheduled for November 29, 2025, participants can choose to run either a marathon or a half marathon, completing 4 or 8 laps respectively. The course is flat and fas..

The Lee Mill Relays is an exciting relay race set in the scenic Lee Mill Quarry, designed for teams of four runners. Each participant will tackle an individual leg of a challenging 10.7k flagged course. This event, now in its 8th year, welcomes teams of men, women, or mixed groups, with a total entr..

The St Andrews Day Challenge, organized by Zig Zag Running, is a unique running event held at Brandon Country Park in Suffolk. Participants can choose between a 6-hour or 4-hour format, running as far as they can on a 5.3k multi-terrain loop through the scenic forest. This event caters to runners of..

The Winter Trail Runs at Dalby Forest is an exciting running event set to take place on November 30, 2025, in one of the UK's premier trail venues. Participants can choose from three distances: a Marathon (26.2 miles), a Half Marathon (13.1 miles), and a 10km run (6.2 miles). The event is located in..

The Surrey Hills Half Marathon is a scenic 13-mile guided trail run starting and finishing in Guildford, Surrey. It showcases the stunning landscapes of the Surrey Hills, including landmarks like St Martha's Church and hill, the village of Shere, Newlands Corner, and Hackhurst Downs. Runners travers..

December 2025

Winter on the Downs is an ultra-running event featuring two single-loop races of 55 miles and 100 miles, set in the scenic trails of East and West Sussex. Starting and finishing in Eastbourne, participants will traverse iconic landscapes, including Beachy Head and the Seven Sisters. The 55-mile rout..

The Crag Fell Handicap Race, organized by the Cumberland Fell Runners, is a challenging fell running event set in Bleach Green, Ennerdale. This race features a distance of 2.5 miles with an elevation gain of 1345 feet, making it a Category AS race. Participants must prepare adequately with essential..

The East Devon 8 & 5 Trigs event offers challenging trail running options, including a half marathon, marathon, and ultramarathon, all centered around navigating eight trig points in East Devon. Participants self-navigate along scenic routes that incorporate varied terrain, with distances ranging fr..

Endurancelife Dorset offers a challenging running experience along the stunning Jurassic Coast Path, based in Swanage. Participants can choose from four different race distances: a 10K, half marathon, marathon, and ultra marathon, each set against a backdrop of breathtaking coastal scenery. The even..

UTMB Index

The Cannock Chase Forest Christmas 10K, 5K, and Junior Fun Run is a festive running event set in the scenic Cannock Chase Forest, Staffordshire. Participants can enjoy a challenging yet beautiful trail through the forest, with options for different distances to accommodate all ages and abilities. Th..

The Fordh Sen Mighal is a popular trail running event held in Cornwall, England, attracting participants annually. The race covers 11 miles along a scenic point-to-point course on the European cultural route from Lelant to Marazion, passing through picturesque sights such as Trencrom and Ludgvan. It..