Trail Running calendar near Thornbury 2025-2026

We have found 302 Trailruns within 80 miles of Thornbury. See below where and when you can find the races.

The Broadway Marathon is a challenging running event set in the picturesque northern Cotswolds, known for its hilly and muddy terrain. Licensed by the TRA and adhering to UK Athletics rules, the marathon is open to participants aged 18 and older. The event promises stunning scenery, making it a uniq..

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Dark Valley, Night Trails is an exhilarating night-time running event hosted by BigFeat Events at Moors Valley Country Park. Participants can choose from 10km, 20km, or 30km looped trails, all set amidst the enchanting woods of Dorset. Runners will navigate the course using headtorches, guided by fl..

The ATW Wendover Woods Trail Run & Canicross is an exciting event set in the picturesque Wendover Woods, offering participants a chance to challenge themselves on scenic trails. Scheduled for November 23, 2025, the event features various distances, including a 5K, 10K, and Half Marathon trail run, a..

The New Forest Stinger is an annual 10-mile multi-terrain trail running event held in the scenic New Forest at Ocknell Campsite, Fritham, near Lyndhurst. Organized by Totton Running Club, the race features an undulating course that follows approved trails and paths, offering some of the best views i..

DirtRun In The Dark is an exciting 10km off-road running event set in the scenic Wyre Forest at the Callow Hill Visitor Centre. Participants will navigate a two-lap course through tracks and trails under the cover of darkness, making headlamps or torches a mandatory requirement. Open to runners aged..

The Maverick Original Oxfordshire 2025 is a trail running event held at Stonor Park in Oxfordshire. Taking place on November 29, 2025, it offers three routes: 22 km, 12 km, and 7 km, through the historic estate and the Chilterns Area of Outstanding Natural Beauty. The course features challenging cli..

The Maverick Exposure Lights Dark Oxfordshire 2025 is a nighttime trail running event held at Stonor Park in Oxfordshire. Participants can choose from three challenging routes: 7 km, 12 km, or 17 km, all set within the scenic estate known for its wildlife, including fallow deer and wallabies. The ev..

December 2025

Endurancelife Dorset is a challenging trail running event set along the stunning Jurassic Coast Path near Swanage, a UNESCO World Heritage site. The event offers multiple distances including a 10K, half marathon, marathon, and ultra marathon, with ascents ranging from 774 to 7,027 feet, making it a..

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The Secret Santa Tinsel Half Marathon, along with the Tinsel Twelve 12k and Turkey Ten miles, is an exciting running event set in the scenic Brecon Beacons National Park. Participants will enjoy beautiful trails starting from the historic Tretower Court & Castle, with routes offering stunning views..

The East Devon 8 and 5 Trigs event offers trail running challenges in East Devon with three distance options: a 3-trig half marathon (21km), a 6-trig marathon (42km), and an 8-trig ultramarathon (53km). The routes are self-navigated, unmarked trails starting from Budleigh Salterton, featuring varied..

The East Devon 8 Trigs is a self-navigation trail running event held in East Devon, starting and finishing at Budleigh Salterton Cricket Club. Participants can choose from three distances: a 21km half marathon (3 Trigs), a 42km marathon (6 Trigs), or a 53km ultramarathon (8 Trigs). The course featur..

The Cardington Cracker is a popular fell running event organized by Telford Athletic Club, taking place in Cardington, Shropshire. The race covers a distance of 14.5 km with a total ascent of 793 meters, making it a challenging course, especially in December's conditions. Participants must pre-regis..

The Chasewater Christmas Pudding Dash is a festive running event held at Chasewater Country Park in Staffordshire. Participants can choose between a 10k or 5k race, with the course featuring picturesque trails around the reservoir. The event encourages festive attire, adding to the celebratory atmos..

The New Forest Xmas Trails is a festive trail running event hosted by BigFeat Events, set in the picturesque New Forest National Park. Participants can choose from four distances: 15K, 30K, Marathon, and 50K, all on challenging yet runnable off-road courses. The event begins at Holmesly Campsite, of..

The Celtic Trail Races 2025, held in Aberdare, Wales, is a festive trail running event featuring three race options: a 50k ultra, a marathon, and a half marathon. The courses traverse scenic areas including Afan Forest, Rhigos Mountain, and the Brecon Beacons, with routes passing ancient Celtic trac..

The Nightmare Before Xmas Trail ½ Marathon is a challenging running event set to take place at the Bridgend Miniature Railway Centre. Participants will tackle a mixed terrain course that includes an 8-mile section known as The Hateful Eight, followed by an additional 5 miles filled with obstacles li..

The Slow and Dirty is a festive-themed 19-kilometer trail race held in Sturminster Newton, Dorset, following a flat, hard-surfaced route along a former railway line known as the Somerset and Dorset (S & D). The course offers scenic views along the River Stour valley, passing historic sites like the..

The Winter Woolly 10km is a popular trail running event held on December 24th at the picturesque Elstree School in Upper Woolhampton, Berkshire. This multi-terrain race offers participants a scenic experience through the beautiful countryside, featuring lanes, footpaths, trails, and woodlands, with..

The Plain Crazy Winter 12.5 Mile run is a challenging event set in scenic and potentially snowy conditions, taking place on December 28, 2025. Participants can expect a hilly course that tests their endurance, with a 3.5-hour cut-off time. The event supports The Royal British Legion Poppy Appeal and..

January 2026

The Bell Challenge Day 5, organized by Running Events Devon, takes place on January 2, 2026, in Exmouth, Devon. This 7-hour timed event features a mainly flat, 5.3 km out-and-back course along a scenic, disused train line, fully paved and accurately measured as a road race. Participants of all abili..