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 1322 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.

Run or walk the Thames Path Ultra Challenge from Putney to Henley, with distances from a 10 km riverside loop up to the full 100 km ultra. Choose a one day push or a relaxed two day option with midway camping and festival vibes in Henley.

Take on the Dartmoor Volcano Race, a scenic 10.5 mile trail around Ryders Hill and the Red Lake Volcano with over 550 metres of ascent across rugged moorland. Limited to 250 runners, finishers earn a bespoke medal.

Ultra X England is trail running from Edale in the Peak District with six distances from a 12 km Dash to a 110 km two day challenge. Aid stations, camping options and UTMB Index status for select races make it ideal for adventurous runners.

UTMB Index

Run 50 km of scenic Suffolk coastline from Lowestoft to Aldeburgh on a mostly flat point to point course that rewards steady pacing and coastal views. A UTMB World Series index race with four aid stations and full marshalling.

UTMB Index

Celebrate the 20th anniversary of the River Ayr Way Challenge, a stunning 40 mile ultra along Scotland's River Ayr on 12 September 2026. Expect rolling countryside, a coastal finish, and a friendly field of runners from across the UK.

The Nine Edges is a 20 mile off road endurance across Peak District moorland and gritstone edges, perfect for adventurous runners and walkers. Organized by Edale Mountain Rescue, it offers checkpoints, a free finish drink and bus return to..

Take on the Isle of Wight Fell Race Series in Ventnor on 12 and 13 September 2026, featuring three scenic but testing hill races across St Boniface, the Ventnor Horseshoe and Wroxall Round. Entries open 22 October 2025.

Discover the Shere Multi Terrain Event, a scenic trail running festival in the Surrey Hills AONB with 10k, 21k and marathon routes that showcase dramatic views and big climbs. Expect an expo village, on site food and fortnightly training ru..

Take on a scenic multi terrain marathon or half marathon through the rolling Surrey Hills from Farnham. The off road, hilly course features plenty of aid stations and friendly marshals to keep you moving.

Run the scenic Yorkshireman off road marathon or half across moorland, trails and woods with big climbs and stocked feed stations. Chip timing, guided reccy runs and limited entries make it a popular rugged test for trail and fell runners.

Join Rye Ancient Trails 30k or 15k through the High Weald, linking Norman churches with rolling hills, woodland and coastal views. Enjoy a town crier start, friendly community marshals and post race tea and cake.

Join the Alf Shrubb Memorial 10k and 5k in Slinfold, a friendly trail race through West Sussex countryside finishing at Slinfold Cricket Club. Chip timing, medals, cakes and a licensed bar make it a lively community fundraiser supporting lo..

Experience classic Yorkshire fell running at Bradley Fell Race near Skipton. Junior categories and a senior 3.5 mile course packed with climbs, big views and BOFRA championship status, with parking on the field.

A scenic 13.1 mile trail through Richmond Park, starting and finishing at Sheen Gate. Rolling trails, lakeside views and woodland wildlife make this a refreshingly classic half marathon for runners of all levels.

Run the Derbyshire Dales Trail from Bakewell Showground with 9 km, 15 km or 22 km routes along the Monsal Trail by the River Derwent. Scenic Chatsworth House views, supportive marshals and a lively finish await.

Tackle the Lake District Mountain Trial, a classic mid September mountain navigation event that tests route choice and stamina over rough fells. Choose Classic, Medium or Short courses and enjoy post race food and camaraderie.

Take on the Peak District Challenge 2026 in Hathersage on 18 and 19 September, choosing routes from 25 km to 100 miles. Enjoy full safety support, team GPS tracking, a finish meal and a memorable outdoor adventure.

UTMB Index

Tackle The Relentless in Bridgend, a tough looped ultra on 18 September 2026 offering 50 miles (5 loops) or 100 miles (10 loops) with big support, crew zones and drop bag access each lap. Limited to 25 runners per distance so book early.

Three Towers Ultra on 19 September 2026 takes runners across the West Pennine Moors from Darwen to Jubilee, Rivington and Peel towers. Choose 39 miles or 55 miles with big climbs, unmarked navigation and solid support including checkpoints,..

Challenge the Yorkshire Three Peaks in a scenic 70 km or 100 km ultra near Hawes, North Yorkshire on 19 to 20 September 2026. Limited to 120 runners, Ranger Ultras provides strong support for a memorable autumn mountain race.