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 1317 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.

Holme Moss Fell Race is an open event run by Holmfirth Harriers AC as part of the club’s Fell Championship. The demanding course covers about 28.5 km (17.8 miles) with around 1,285 metres of ascent, across rugged Pennine moorland on the edge of the Peak District. The route starts near Holme Moss and..

The AIRE Ultra Trail and Super Trail Half is a scenic running event held at Piglove By The River in Leeds, within Citu’s Climate Innovation District. The Ultra Trail covers approximately 43-45 km (27-28 miles), while the Super Trail Half is about 22 km (14 miles). The course is fast and flat, follow..

August 2026

The Railway Ultra is a multi-distance running event staged along the River Severn from Ironbridge to Bridgnorth, using a disused railway line with striking river views and hints of industrial heritage. Runners choose from 9 miles, 13.1 miles (half marathon), 19 miles (3/4 marathon), 28 miles, or 37..

The Dovedale Dipper is a popular trail running and challenge walking event held in Hartington, within the scenic Peak District National Park. Participants can choose between two distances: approximately a marathon length and a 15-mile option. The course explores the beautiful White Peak area, offeri..

North Downs 50 Ultra Challenge takes place on the North Downs in Surrey, starting and finishing at Loseley Park, Guildford, with 25 km and 10 km options. The 50 km loop uses the North Downs Way through Surrey hills, offering scenery and views southward with easy access from London. Participants walk..

The EDDUM 2026 is a 50-mile trail challenge around the Epynt Way, looping the Sennybridge Training Area in mid-Wales. Runners traverse a largely untouched permissive path bordered by the Brecon Beacons to the south and the Cambrian Mountains to the north. The route offers a scenic, green landscape w..

Two races compose the Dartmoor BigDayOut: The Crossing, a 33.5-mile 'baby ultra' that traverses moorland and climbs two 600m summits, starting in Belstone and finishing at Ivybridge Rugby Club. The Great Escape covers 15.5 miles, following the final section of The Crossing from Princetown to Ivybrid..

Isaac's Tea Trail Ultra. Backwards is a 37-mile ultra loop starting and finishing in Allendale, with a route through Ninebanks, Alston and Nenthead before returning to Allendale. Staged in the North Pennines AONB (a UNESCO Geopark), the 2026 edition runs the route in reverse from previous years.The..

She Strides Women’s Only 50K is West Yorkshire’s first women-only ultramarathon. The circular 50-kilometre course starts and ends at Wadsworth Community Centre in Hebden Bridge, and climbs through woodland and open moorland, with a scenic detour to Haworth. Runners face varied terrain and around 1,4..

The MTC Thames Challenge is a four-day ultra endurance event from August 6–9, 2026, starting at Kemble Station in the Cotswolds (GL7 6AW). The 184-mile course unfolds across four stages, featuring four unique Ultra events: The Cotswold Ultra, The Oxford Ultra, The Windsor Ultra, and The Richmond Ult..

The MTC Cotswold Ultra is the opening day of The Thames Challenge, based at Kemble Station (GL7 6AW). This UKA-sanctioned running event is a self-sufficient ultramarathon with solo entry (£90). The route follows the Thames Path from Kemble to the river’s source, then returns via Wysis Way and along..

The MTC Oxford Ultra is an ultra-distance running event in Oxford, serving as Day 2 of The Thames Challenge. The venue is the Travelodge Oxford on Abingdon Road (OX1 4XG). A key feature is self-sufficiency: competitors must carry mandatory gear, including a backpack, head torch with spare batteries,..

ATW Odyssey12 is a multi-terrain running event held at Riverside Park, Regatta Meadow in St Neots, Cambridgeshire (PE19 7AB). It forms part of the ATW First to Full Triathlon Festival, with three events — Odyssey12, Odyssey Triathlon, and St Neots Triathlon (Race 2) — running side by side. Runners c..

The MTC Windsor Ultra is an ultra running event held in Windsor, United Kingdom, organized by Ultra Running Ltd and listed under UK Athletics. The event is scheduled for Saturday, 8 August 2026. Entry is currently open with an individual entry fee of £90 plus service fee; a defer option to 2026 is a..

Cordwell Colossus is a 20-mile trail run in Derbyshire on the edge of the Peak District, looping through the Cordwell and Linacre Valleys starting at Holmesfield Village Hall. The route combines woodland tracks, farmland, and rural trails with about 840 metres of ascent and sweeping views from high..

Ilkley Skyline is a classic fell-running challenge on the moors around Ilkley, hosted by Great Owl Running. The event offers two distances: 22 miles (35 km) with about 3,000 ft (910 m) of ascent. The loop starts and finishes outside The Hermit Inn in Burley Woodhead and traverses eight moors, includ..

Its Grim Up North Running’s Sir Titus Summer Trot takes place beside the canal near Saltaire’s world heritage village in Saltaire, Shipley, West Yorkshire. The event offers distances from 5k to Ultra, all on a largely flat towpath suitable for runners of all abilities, from casual participants to PB..

Lambton Castle Trail Runs take place at Lambton Castle, Chester-le-Street, County Durham, on the private Lambton Estate. The event offers three distances: 5, 10, and 15 miles—the latter combining the other two loops for endurance. Runners traverse a mix of woodland trails, open fields, firm paths, a..

The Black Bull 15 Mile Trail Run and 15 km Trail Run in Chelmsford, Essex, is staged by Multisport-Management. The event features a 15-mile loop through local countryside and country roads, with a non-competitive 15 km option for those who prefer a jog or walk. Runners start and finish in the pub ga..

CBTE Morland Half Marathon is a partially self-navigated trail half-marathon organized by The Charm Bracelet Marathon. The course starts and finishes in Morland Village Hall in the Eden Valley near Penrith and features rivers, becks, woodlands, and pastures, using parts of the Morland Marathon route..