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 1326 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.

Bring your dog to Lakeland Paws Dogs @ Dodd Double Header for scenic forest trails with views over Bassenthwaite Lake. Pick a 5K or 8K loop and enjoy a friendly canicross finale on marked, chip timed courses.

Sid Valley Ring Half and Third Marathon is a scenic trail around Sid Valley with coastal views, woodland and rolling hills for runners and walkers. Fully marked routes, aid stations and an oak finisher coaster await after 22 km or 13.5 km.

Run a rugged 55 mile circle of the Cateran Trail from Gulabin Lodge in Spittal of Glenshee. With 2,250 m ascent and mostly off road terrain, this UTMB Index qualifier is a tough scenic Highland challenge.

The Cottam Canter on Saturday 9 May 2026 at UCLAN Sports Arena in Preston offers 5K through ultra distances on a scenic 5K canal and park loop, perfect for loop lovers and ultra runners. Field limited to 100 so enter early.

Take on Endurancelife Exmoor on 9 May for sweeping moorland, cliffs and wooded combes with routes from 10K to an Ultra, featuring stiff climbs and stunning coastal views. Fully marked courses, electronic timing and a finishers medal make it..

UTMB Index

The Collingbourne Races, held at Crawlboys Farm in Ludgershall, offer a scenic off-road running experience through the beautiful Collingbourne woods. Featuring a half marathon and a 10km race, the course includes bridle paths, woodland trac..

Test your grit on the Tenacious Ten Hour Endurance Challenge at Mynydd Troed, a marked mountain loop with steep climbs, runnable sections and technical descents. Solo runners, pairs and teams of four are welcome to race against the clock.

Run Rabbit Trail Festival returns to Deene Park near Corby on 9 and 10 May 2026, offering scenic but hilly woodland trails and on site entertainment. Race a night 10k, a five loop 25k, a trail half or combine all three in the Quest.

The Chiltern Hills 100K is a scenic, challenging ultra around the Ridgeway, visiting Ivinghoe Beacon and Ashridge. Limited to 250 runners and UTMB World Series index race, this May event has rugged trails, great support and a Chesham finish..

UTMB Index

Run the Kintyre Way Ultra on 9 May 2026 from Tayinloan to Campbeltown, a scenic trail through beaches, woods and hills with stunning island views. Well supported course with refreshments, drop bags and relay options.

Preseli Beast is a circular off road fell race from Maenclochog around the Preseli hills, with steep climbs, boggy trails and coastal views. Choose 24 mile or 11 mile routes; entries open December 2025 for May 9 2026.

Apocalypse Ultramarathon in Church Stretton on 9 May 2026 offers 10 to 50 mile options across four scenic but brutal loops. With a 16 hour limit, rolling food at HQ and limited places this is a bold endurance challenge.

Challenge yourself on the Westcountry Ultra Hilly 50, a 50 mile trail ultramarathon from Minehead featuring coastal paths, ancient woodland and 7337 ft of climbing. This cupless race has a 16 hour cutoff and stunning West Country scenery.

Tackle the Formartine and Buchan Railway 12 hour or 6 hour ultra on Saturday 9 May 2026, running along the scenic trail between Maud and Auchnagatt. Race as far as you can in your time slot for medals, prizes and a great day out.

Take on the Man Up & Down 20k coast trail along scenic North Cornwall cliffs, supporting Man Down Cornwall. Enjoy a timed run, great views and a finisher medal.

Marsden Moors Marathon on Saturday 9 May 2026 showcases scenic moorland in the Colne Valley with marathon, 23 and 18 mile options. Limited to 150 entries, the event offers checkpoints, finish food and downloadable route maps.

Join the inaugural Holy Trail Festival of Running on 9 May 2026 in Lowestoft for scenic, challenging trails from the marathon up to 50 mile, with just 400 spots. Enjoy well supported checkpoints, finish refreshments and a lively festival vi..

Epona 100 is a bold 100 mile trail race from Abergavenny that links Offa's Dyke, the Cambrian Way and the Beacons Way across roughly 17,000 ft of ascent. Expect rugged trails, aid station support and a generous 50 hour time limit.

Run or walk a fully way marked 47 mile trail that circumnavigates Lake Windermere, soaking up classic Cumbrian scenery and technical fell sections. Five stocked aid stations and a 24 hour cut off support you to the finish.

Run a scenic single loop from Sherwood Forest through Clumber Park and historic estates with 30 or 40 mile options, the 40 mile passing the Major Oak. Expect waymarked trails, regular aid stations and hearty vegan finish fare.