Thornbury
Trail Running Calendar near Thornbury 2026-2027
Explore the top trail runs near Thornbury for 2026-2027! We've gathered 134 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
Mells Mash Up is a roughly 7 mile off road race around the village of Mells near Frome and serves as Race 1 of the Wiltshire Off Road League.
A five-lap ultramarathon in Berkeley, Gloucestershire across 25-27 September 2026, covering about 130 miles and 15,000 ft of ascent with a 24 hour cut off and 120 places, organized from Hamfields Leisure with camping and tracking included.
Guto Nyth Bran is a fell race on 26 September 2026 at Bedwas Community Hall covering 9.6 km with 396 m of climb. The course is partially marked, includes a short walk from parking, and is for entrants over 18.
A forest trail half marathon in late September with no road crossings, chip and gun timing, water stations and medals for finishers, organised by the local Rotary Club.
A coastal 10 km race along the North Somerset shoreline, passing Black Nore Lighthouse and Redcliffe Bay. The mixed terrain route includes grass, mud, rocks and tarmac with undulating sections and a seafront finish.
October 2026
A chip timed 10 km trail race on 4 October 2026 through Somerset countryside, passing a prehistoric long barrow. The event includes a bespoke medal, Race Nation app support, camping nearby and proceeds shared with two charities.
Trail event at Ashton Court Estate offering 6 km and 10 km trail or ruck options with GORUCK Rucker 4.0 and competitive or open categories.
A beginner friendly off road 10 km along the River Wye from Ross on Wye with nearby facilities, parking and a bespoke finisher medal; postponed until 4 October 2026.
Inflatable 5K in Cheltenham on 10 October 2026 features giant inflatables across 2.5 km laps with 2.5k, 5k, 10k and 15k options, music zones, medals and family rules.
A self navigated 55 km circular ultra through the Forest of Dean on 10 October 2026 with GPX navigation, aid stations, HQ at Beechenhurst and a canicross category.
Trail race in an Area of Outstanding Natural Beauty around Biblins Youth Campsite, Ross-on-Wye covering approximately 6 miles or 10k on mixed trails and single track. Entry is limited to 200 runners and prizes include individual and team awards.
Off-road family races on 11 October 2026 at Withymead Playing Fields with 2 km, 5 km and 11 km options, organised to raise funds for Marshfield Primary School PTA.
A roughly 12 km off road race on 18 October 2026 through bridle paths and the Imber Range, passing close to the Westbury White Horse. Limited to 200 places, the event offers gender and veteran prizes and a bespoke finisher medal.
A 12.5 miles autumn trail race from Keynsham with two stream crossings, water stations, canicross places and a finisher medal for every runner.
Seven consecutive offroad race days at Pengethley Manor from 19 to 25 October 2026 with a seven hour time limit each day and distances from 5k to ultra. Each day awards a unique Halloween themed medal and a virtual option is available.
An offroad Halloween race at Pengethley Manor offering 5k, 10k, half marathon, marathon and ultra distances with a seven hour time limit. In-person and virtual entries are available and paid verified finishes receive themed medals.