Trail Running calendar near Chepstow 2025-2026

Two Tunnels Races in Bath, UK, organized by Relish The Great Outdoors, offer a unique set of events across a city-centre route that includes Bath’s Devonshire Tunnel (408m) and Combe Down Tunnel (1672m). Distances range from 500m Colourburst and 2km Colourburst to 5km (two waves), 10km (multiple wav..

The Summer GMU (Green Man Ultra) is a Bristol-area ultramarathon offering two distances: 45 miles (GMU45) and 30 miles (GMU30). Both races use the same clockwise course along the Community Forest Path, starting and finishing at Ashton Park School for GMU45, and starting at The White Horse in Hambroo..

The Beast of Llangattock is a trail running event on Saturday 22 August 2026 at Park Farm, Llangattock, Crickhowell, Powys. The event offers four distances, all on marked courses with GPX files available for download. 10 km (6 miles) 10 miles (16 km) 20 miles (32.5 km) 32 miles (51 km) Cut-off ti..

Black Cattle Ultra Gwartheg Duon is a South Wales ultra organized by Ridge Runners, offering two distances: 44 miles and 33 miles. Runners start from Llanthony Priory in the Black Mountains or from Abergavenny, following the Cambrian Way to Cardiff and finishing near Castle Coch in Cardiff. The rout..

The Henley River event takes place on Saturday 5 September 2026 at Temple Island Meadows / Remenham Farm, Remenham Lane, Henley-on-Thames RG9 3DB. It is organised by RunThrough and supports Royal Berks Charity. Races available are: Half Marathon 10K Junior Race (under 11) Entry options include st..

The RIDUM is a 30-mile ultra marathon held in South East Wales, following the Rhymney Valley Ridgeway Walk. This challenging trail run features 4,252 feet of elevation, taking participants across ridge tops around the Caerphilly basin with stunning views of the surrounding landscape. The route inclu..

The Joust Races 2026 is a 24-hour multi-lap running event held on Saturday 5 September 2026. The format uses a looped course with each lap approximately 5.56 miles. The course is described as well marked and marshalled, easily navigable and relatively flat. The event takes place in an area called t..

Jurassic Coast Ultra Run is a 30-mile, largely coastal and hilly trail ultra starting and finishing at Knoll Beach, Studland Bay, Dorset. Guided by an experienced ultra runner and coach, the route traverses inland along Purbeck Way to Corfe Castle, climbs to ridge panoramas, then descends to Kimmeri..

Dawn Two Dusk, organized by Mad Running Junkies, is a 12-hour night-to-dawn endurance event staged at Bridgend Miniature Railway in Bridgend, South Wales (Fountain Road, Aberkenfig, Tondu). The format features three roughly 10-mile loop routes that participants can complete as many times as possible..

The Medal Mix Challenge Day 1, organized by Running Events Devon, takes place near Capel Lane, Littleham, Exmouth on November 28, 2026. This 7-hour timed event features a scenic 5.3 km out-and-back course on an old disused train line, fully paved and accurately measured as a road race. Suitable for..

The Medal Mix Challenge Day 2, organized by Running Events Devon, takes place on Sunday, 29th November 2026 near Capel Lane, Littleham, Exmouth. This 7-hour timed event welcomes runners and walkers of all abilities to complete as many 5.3 km laps as possible on a scenic, undulating, and accurately m..

Nightmare Before Xmas Trail ½ Marathon, organized by Mad Running Junkies, takes place at Bridgend Miniature Railway Centre in Aberkenfig (Tondu), near Bridgend. The course splits into an 8-mile opening section, The Hateful Eight, followed by roughly 5 miles of mud, water, hills, and a forestry trail..

The Birmingham Black Country Half Marathon is a running event held in the Black Country region near Birmingham. Organized by StuWeb Events Ltd., the race covers the half marathon distance of 13.1 miles. While specific details about the course and atmosphere are not provided, the event typically attr..