Trail Running Calendar United Kingdom 2025-2026

The Trevornick 10K is a multi-terrain running event held annually on the second Sunday in May, part of the Cornish Grand Prix series. This race, which has evolved from the previous Trevornick 10 Mile, attracts around 600 participants and features a scenic yet challenging course primarily off-road, i..

The Zig Zag Marathon and Half Marathon takes place at the Suffolk Running Centre in Bury St Edmunds, featuring a scenic, officially measured route. Participants can choose between a full marathon and a half marathon, both designed for a mass start. The event includes a seven-hour cut-off time and of..

The Hardy Half is a running event set in the picturesque Dorset countryside, inspired by the works of renowned writer Thomas Hardy. Participants can choose between two distances: the 5-mile 'Half Hardy Half' and the half marathon 'Original Hardy Half.' Both events aim to raise funds for local charit..

The Halstead & Essex Marathon is set to return in May 2025 for its 29th edition, having been established in 1995. This popular event, organized by Halstead Road Runners, attracts participants from across the UK and beyond, taking place on scenic, low-traffic roads in North Essex. The marathon is par..

The Derwent Reservoir 10k Trail Runs will take place on May 11, 2025, at the scenic Derwent Waterside Park in Edmundbyers, Consett. This event features both 5k and 10k trail runs, designed for participants of all fitness levels, showcasing the stunning surroundings of the reservoir. The routes prima..

The Avenham Amble, organized by PFW Running, is a running event set in the picturesque parklands of central Preston. Participants can choose from multiple distances, including a 10K, half marathon, full marathon, and ultra marathon, all starting and finishing at Avenham Park Cafe. The course feature..

The Hardmoors 26.2: White Horse Trail Marathon is a challenging running event taking place at Sutton Bank Visitor Centre near Thirsk, North Yorkshire. Scheduled for May 11, 2025, it features three race distances: a full marathon (approximately 28 miles), a half marathon (17 miles), and a 10k (8 mile..

The Stroud Trails Event, organized by Iamoutdoors, features four trail running options: a Quarter Marathon (11K), Half Marathon, Marathon, and an Ultra 40. Set in the picturesque Cotswold hills, participants will navigate a mix of local trails, disused railway tracks, and common land, all while enjo..

The Shires and Spires Marathon will take place in Naseby on Sunday 11 May 2025. You can run between 10 and 35 miles.

The LDWA South Downs Marathon is a challenging event set in the picturesque South Downs National Park, featuring two distances: 28 miles and 18 miles. Participants will traverse stunning landscapes, including the Seven Sisters and Cuckmere Haven, with significant elevation gains of over 4000 feet fo..

The Long Wittenham 5km Family Fun Run & Walk is a community event designed for participants of all ages and abilities. Set in the picturesque countryside, the event features a clearly marked and marshalled cross-country route around Paradise Wood, concluding at The Plough pub, where refreshments wil..

The Shires and Spires Ultra Marathon is a scenic 54-mile race set in Northamptonshire, featuring a mix of approximately 70% trails and 30% roads. Starting and finishing at Naseby Village Hall, the event offers five distance options, including an ultra marathon, marathon, three-quarter marathon, half..

The Jack Bloor Race will take place in Ilkley on Tuesday 13 May 2025.

The Hankley Common 10K is a guided trail running event set in the scenic Hankley Common, known for its rich wildlife and historical significance, including the Atlantic Wall replica used during WWII. This event is designed for runners of all levels, particularly those new to trail running or looking..

The Severn Challenge is a demanding 218-mile ultra marathon held over five days, featuring five distinct stages along the River Severn's scenic path. Participants tackle a variety of terrains, with a historical finisher rate of around 26%, highlighting its toughness. Each day offers a unique race, a..

Stately Trails: Constable Burton is an exciting running event set in the picturesque grounds of Constable Burton Hall, a Grade I listed Georgian house in Wensleydale. Participants can choose between a 5km or 10km race, both featuring stunning trails that wind through formal gardens and woodlands. Th..

The MTC Hafren Ultra is a challenging ultra marathon that forms part of the MTC Severn Challenge. Participants embark on a scenic 27-mile route starting with a nearly four-mile trek up Plynlimon, known for its treacherous terrain. After reaching the source of the River Severn, runners retrace their ..

The Ultra-Trail Snowdonia by UTMB is a prestigious trail running event that forms part of the UTMB® World Series, taking place in the stunning landscapes of North Wales. The event features multiple race distances, including 100M, 100K, 50K, and a 25K race, attracting over 2,700 participants from mor..

The MTC Severn Plod Ultra is a challenging 48-mile ultra marathon that takes participants on a scenic route from the Mid Wales Art Centre to Shrewsbury. The course features a mix of trails along the River Severn and the Montgomery Canal, with several checkpoints providing vegan and gluten-free food ..

The Keswick Mountain Festival will take place in Keswick from Friday 16 May 2025 to Sunday 18 May 2025.