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 1333 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 North Leeds Skyline is a trail running event held in Otley, featuring distances of 50km (Ultra Trail), 25km (Super Trail), and 15km (Challenge Trail). The course traverses public footpaths and trails with significant elevation gains, including 1000m for the ultra and 650m for the super trail. Th..

The Lake District Ultra Challenge is a multi-distance endurance event held in England’s scenic Southern Lakes, with basecamp in Kendal. Participants can walk, jog, or run various distances including 100km, 50km, 25km, a marathon, and a 10K loop in Ambleside. The 100km route is a loop featuring chall..

The Suffolk Back Yard Ultra is a highly competitive endurance running event held at High Lodge in Thetford Forest, Suffolk. Participants run a 4.167-mile loop every hour on the hour, continuing until only one runner completes a loop within the hour time limit. The course is flat, wide, and scenic, f..

Ultra Scotland 100 is a challenging 104-mile ultramarathon held along the scenic Southern Upland Way in Scotland. Starting at St John's Town of Dalry and finishing in Galashiels, the race features 4,611 meters of elevation gain and traverses iconic trails including Benbrake, Gateshaw Rig, Lowther Hi..

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The Sundowner Marathon is a unique running event held in Purleigh, Chelmsford, England. This marathon offers a scenic course that takes participants along canals, over waterfalls, through vineyards, woodland, and coastal saltmarshes. The race starts early on a summer evening and continues into the n..

Ultra Scotland 50 is a challenging 56-mile trail ultramarathon held in southern Scotland, following the scenic Southern Upland Way. Starting at St. John's Town of Dalry, runners traverse forests, valleys, and mountains with a total ascent of 2,447 meters.The race finishes at Moffat Rugby Club and ac..

The Samaritans Way Ultra is a trail running event held at Guisborough Rugby Club, featuring two race distances: a 40km marathon and a 60km ultra marathon. The course follows the Official Samaritans Way, a trail created by Teesside Samaritans, with updated routes for 2026. The event supports Teesside..

TSUNAMI Ocean Trails is a challenging trail running event set along the rugged and remote North Devon and Cornish coastline in the South-West of England. The event features three race distances: an Ultra 37-mile race from Westward Ho! to Bude, a Marathon starting at Clovelly harbour, and a 16-mile r..

The Endurancelife Classic Quarter is a challenging 44-mile ultra marathon held along the stunning South West Coast Path in Cornwall, UK. The course runs from Lizard Point, the southernmost tip of England, to Land's End, the westernmost point, featuring steep climbs, descents, and rugged terrain with..

The Valley of the Owls Run is a multi-distance running event held at the Suffolk Running Centre in Bury St Edmunds, Suffolk. The scenic course passes through the village of Ousden, known as the Valley of the Owls, featuring some of England’s oldest roads and beautiful countryside. Runners can choose..

BigSea Trails (WATER) is a trail running event held on the Isle of Purbeck, Dorset, starting and finishing on the sandy Knoll Beach at Studland. Part of the Classic Element Trail Series, this race celebrates the element of water with routes that showcase stunning coastal and countryside scenery, inc..

The Two Tunnels Races, held in Bath, UK, offer a unique running experience featuring the longest underground sections in the UK. The course passes through the historic Devonshire Tunnel (408m) and Combe Down Tunnel (1672m), both well-lit and surfaced, providing a flat and scenic route beneath the ci..

The West Highland Way running challenge, organized by Running Adventures, is a three-day ultra running event covering 96 miles (154 km) with 4,312m (12,143 ft) of elevation in Scotland. Starting in Milngavie near Glasgow, runners traverse iconic landscapes including Loch Lomond, Conic Hill, glens, w..

The Wentworth Castle Trail Runs take place at the scenic Wentworth Castle Gardens in Barnsley, South Yorkshire. This evening event offers two trail run distances: a 5km route ideal for beginners aged 11 and over, and a 10km route suited for more experienced runners aged 15 and above. The course wind..

The Centurion South Downs Way 50km is a challenging non-stop trail race held within the South Downs National Park in Southern England. Starting near Winchester at Matterley Bowl, the 50km course follows the scenic chalk ridgeway, primarily along the South Downs Way National Trail, and finishes at Qu..

The Nene Valley Trail Run is a friendly and scenic off-road running event held at Castle Farm Campsite in Fotheringhay, near Peterborough. Scheduled for June 13, 2026, it offers two race distances: 10 and 20 miles. The courses traverse picturesque Northamptonshire countryside, including green fields..

The Cotswold Way Ultra Challenge is a premier endurance event held in the scenic Cotswolds, UK, featuring multiple distance options including 100km, 75km, 50km, 25km, and a 10km run in Cirencester. Participants can walk, jog, or run at their own pace on a looped route starting and finishing at Ciren..

The Gnosall 10K is a scenic multi-terrain race held in the village of Gnosall, Staffordshire, starting and finishing at the Gnosall Family Sports Club. Covering approximately 11.2 km, the course winds through picturesque countryside including the Shropshire Union Canal, disused railway line, farmlan..

Offa's Dyke 15 is a renowned off-road running event held in Hay-on-Wye, Hereford. The race covers a challenging 15-mile course along the historic Offa's Dyke path, offering runners scenic and rugged terrain. Originally popular from 1977 to 2001, the event was revived in 2015 with the help of the ori..

The Rame Head Race is a scenic running event held at Mount Edgcumbe Peninsula near Torpoint, accessible by a short ferry ride from Plymouth. The race features a 10.5K single loop mostly along the coastal path, offering stunning views and varied terrain with hills and flat sections. Participants can..