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Trail Running Calendar near Thornbury 2026-2027

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Explore the top trail runs near Thornbury for 2026-2027! We've gathered 136 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

January 2027
A 7 to 8 mile cross country run around May Hill in Gloucestershire with steep climbs, muddy trails and an open plain at the summit. A Sunday May Hill Mayhem option adds an extra loop to total 14 to 15 miles.
A winter fell race near Abertillery: 9 km with 550 m climb, mandatory kit, flagged mandatory loop and navigational skills required.
Trail races at Oldbury Court Estate near Bristol offering 4 Mile, 10km and half marathon routes through woodland and riverside paths with live chip timing and finisher medals.
February 2027
Night running at Westonbirt Arboretum among over 2,500 tree species, with 5 km and 10 km options on solid trail-like surfaces.
5 km and 10 km trail style races at Westonbirt Arboretum on 7 February 2027, through areas with over 2,500 tree species; tickets sold out.
Doynton Hard Half Marathon is a cross country half marathon on 2 February 2025, organised by Emersons Green Running Club with entries opened 1 September 2024.
Valentine’s Day lap race at Pengethley Manor offering 5K to ultra distances, in-person or virtual entries, and heart shaped medal options.
Valentines themed 6 km and 12 km runs at Blaise Castle Estate in Bristol on February 14, 2027, with single and couples entries and heart finishers' medals.
Trail running 5k and 10k near Cardiff on marked multi terrain routes with medical support, marshals, finisher medals and category trophies.
A chip timed 5 km, 10 km and half marathon at Ashton Court, Bristol supporting Shelter on a mixed trail and path course with lap based routes.
A timed event on a 2.62 mile out and back canal route with flexible rock up and run starts. Distances range from 5 km through marathon and beyond, with a seven hour time limit and a finisher medal for all.
A multi-distance running event in Bath featuring two converted railway tunnels and a start and finish at Brickfields Park, with funds raised for Sustrans.
A 12 mile cross country race in Dursley on 21 February 2027 with over 2000 feet of climbing across woodland trails, mud, roads and steep climbs.
An approximately 8-mile multi terrain race around Sorbrook and Sluvad near Cwmbran with marshalled routes, medical cover, goody bags and age-category prizes.
A winter adventure race in the Cotswolds combining trail running and mountain biking with map and compass navigation, solo or team entries and bike hire available.
About sixish hilly country miles of off road trails above Long Ashton with chip timing, limited parking, and a charitable donation from each entry.
Trail runs and standard and sprint off road duathlons take place in the forest around Speech House, Gloucestershire.
March 2027
Multi-terrain ultramarathon around Bristol on the Community Forest Path, offering 30 and 45 mile options with checkpoints, chip timing, navigation files and pacers.
Trail races from Chepstow through the Wye Valley visiting Tintern Abbey, offered as a 30-mile loop or a 14.5-mile half with trail terrain and staffed aid stations.
An annual trail ultramarathon of about 33 miles organised by Avon Valley Runners and the Rotary Club of Westbury, next scheduled for 7 March 2027.
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