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 1331 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.

Windy Hill is a challenging 12-mile trail running event hosted by CraggRunner, featuring over 2000 feet of elevation gain. The race begins at the historic Rams Head Inn, known for its stunning moorland views and excellent food offerings. Participants navigate a scenic route that includes checkpoints..

The Trails & Tarmac Backyard Ultra, organized by Limitless Trails, is a challenging endurance event held near Crickhowell in the Black Mountains. Participants run a 4.2-mile loop combining 50% trail and 50% tarmac, featuring mostly flat terrain with one gradual climb and a short steep section. The r..

The Billing is a unique winter running event organized by Great Owl Running, taking place in February. This approximately 14km race starts at the Emmott Arms in Rawdon, Leeds, and features a challenging course that includes a climb up The Billing, a lap around the Leeds Bradford Airport perimeter, a..

The Silverdale Circuit is a challenging yet runnable 19-mile race held near Milnthorpe, accessible from the M6. The undulating course features notable ascents including Arnside Knott and the Fairy Steps, where runners can enjoy magical views of Morecambe Bay and The Lakes. The route passes through s..

XTERRA Matterley is an off-road sporting event held at the scenic Matterley Basin in Hampshire, United Kingdom. Scheduled for February 14-15, 2026, it offers a variety of race formats including duathlons and trail runs suitable for athletes of all levels. The duathlon races feature distances such as..

The Whinlatter Moon Runner is a 10k head torch trail race held in Whinlatter Forest Park, Keswick, Cumbria. This night-time event offers a unique running experience, blending the wild and peaceful atmosphere of the forest after dark. The fully marked, hilly course features a mix of hard-packed grave..

The Anglezarke Amble Challenge is a scenic long-distance walking and running event held in the West Pennine Moors near Rivington, England. Known locally as the "Little Lake District," the challenge offers two walking distances: 17 miles (short route) and 24 miles (long route), with runners restricte..

The Saturn 7 Hour Time Challenge in Durham is a flexible running event held at the Durham Amateur Rowing Club along the scenic River Wear, offering views of the Cathedral. Participants can run as many laps as they wish within a 7-hour limit, with each lap measuring approximately 4.37 miles (7 km) or..

The Dalwood 3 Hills is a popular multi-terrain running event held near Axminster, Devon, featuring three distances: a challenging 10-mile course with hills, mud, and river crossings; a 5km "Dalwood Dash" offering a shorter but still muddy and hilly route; and a new 3km "Dalwood Doddle" fun run suita..

The 'Rayne'ing Medals Anniversary Challenge is a running event celebrating six years of Hare & Tortoise Running, taking place on The Flitch Way in Rayne. Participants can choose from five entry options, including a marathon, 6-hour timed event, 5km, 10km, and half marathon. The course features 5km l..

The Dartmoor Winter Traverse is a fully supported endurance event held on Dartmoor, UK, offering two distance options: a challenging 50 km ultra and a 30 km route from Princetown to Meldon. Taking place in February, participants run or walk across some of the most remote and wild parts of the moors,..

The Cracoe Cracker Challenge is a scenic running and walking event held in the Yorkshire Dales, starting from Cracoe Village Hall in North Yorkshire. Participants can choose between a 25-mile or 12-mile route, both offering beautiful countryside views. The 2026 edition features the South loop first,..

Endurancelife Northumberland offers a scenic trail running event along the dramatic Northumberland coastline, featuring distances of 10K, half marathon, marathon, and ultra marathon. The course showcases stunning views of sandy beaches, dunes, rocky cliffs, and iconic landmarks like Bamburgh Castle...

The St Peters Way Ultra is a 43-mile ultramarathon across Essex, starting from Chipping Ongar and finishing at Bradwell on Sea, at the UK's oldest chapel. The course follows an ancient pilgrimage route over 1,500 years old, passing through historic villages, numerous churches, and scenic Essex count..

The Derwent Reservoir 5 & 10 Milers is a popular winter running event returning for its seventh year, offering participants a choice between 5 or 10-mile routes around the scenic Derwent Reservoir, located on the border of Durham and Northumberland. The courses feature a mix of terrain, including fi..

The ZigZag - Thetford Festival of Running takes place at High Lodge in Thetford Forest, Brandon. This intimate event offers multiple race distances including 5k, 10k, Half Marathon, Full Marathon, and Ultra Marathon, all run on a mainly flat 5km loop course through pathways, trails, and woodland wit..

BigMud Trails (EARTH) is the first event in the Classic Element Trail Series, celebrating the element of Earth. Set in the scenic Meon Valley at Queen Elizabeth Country Park, participants can choose between a 16-mile or marathon distance, both featuring challenging single-lap courses with significan..

The Hadleigh Legacy 10k is an award-winning trail running event held at Hadleigh Country Park in Essex. Known for its challenging and exhilarating course, the race features a single lap of approximately 10 kilometers over undulating terrain with tough hills, mud, and iconic kissing and latch gates...

The Two Tunnels Races, taking place in February 2026, offer a unique running experience through Bath's historic underground tunnels, the longest of their kind in the UK. Participants can choose from a variety of distances, including ultra marathons, half marathons, 10km, 5km, and family-friendly Col..

SilverBackTrails Lilla’s Revenge is a 10-mile trail running event held in the scenic North York Moors National Park. The course follows part of the iconic Lykewake long-distance footpath, visiting historic sites such as Lilla Howe, home to the oldest cross on the Moors, and Louven Howe, a Neolithic/..