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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.

March 2027
Six hour trail loop challenge at Symonds Yat Rock, repeat a 5.25 km loop with 160 m climb, aid station each lap and medals for six, nine and twelve completed loops.
Scenic 5K, 10K and Canicross runs across the private grounds of Highnam Court in Gloucester, with lakes, gardens, woodland paths, on-course water and finisher prizes.
Looped 50 km, 29 km and 10 km trail routes around Bath from Bath Racecourse with marquee rest stops, GPS tracking, medical support, and finisher medal and T-shirt.
Annual March challenge walk around Abergavenny with four route options from about 10 to 20 miles, mountain checkpoints and charity fundraising.
A fell race near Goodrich covering 8.6 km with 335 m ascent, listed in the South Wales Winter Hill Series with entry fees for members and non-members.
A night trail at Mendip Activity Centre offering 5 km and 10 km laps as part of the Dark Skies Series; torches of 250 lumens or more are required.
A way marked Forest of Dean half marathon around Speech House on forest trails, with TRA championship and England Athletics qualifier status and proceeds to charity.
April 2027
A 15 miles off road fell race across the Mendip Hills from Cheddar with over 2000 feet of climbing, TRA licensed and supporting local charities.
A 5 mile off road trail race at Upcote Farm near Cheltenham on 4 April 2027, limited to 250 runners, with chip timing, medals and on-site catering.
A guided 30 km social trail run from Dunkertons car park across the Cotswold Way with two checkpoints, three main hills and two pace options.
Timed lap event in Cardiff Bay on 11 April 2027 offering distances from a single 5.3 km lap up to ultra within a seven hour limit.
A point to point 200 miles trail race across South Wales from Chepstow to Worm's Head, with a 120 hour limit, 30,000 ft climb, eight aid stations and live tracking.
Self-navigation ultramarathons of 50 miles and 50 km across the Mendip Hills from Mendip Activity Centre with pub-based routing and on-course support.
Trail and ultra runs in central Bristol on 25 km and 55 km routes that follow rivers, parks and former railway paths with feed stations and GPX navigation.
A walking and running event around Bath with routes of 12.5, 17, 21 and 26.5 miles over public footpaths, staffed checkpoints, a finisher's medal and post-event refreshments.
A 40 mile towpath event from Malpas to Brecon on 24 April 2027 with three aid stations, volunteer Canal Crew support and a 15 hour cutoff.
Timed multi distance event on a 5.3 km Cardiff Bay lap with options from 5 km to ultra, a seven hour limit and flexible start times.
May 2027
A 5 km obstacle event at Coopers Field Bute Park Cardiff with mixed tarmac and grass underfoot, staggered wave starts, on course marshals and fundraising support.
Pretty Muddy Swindon is a muddy obstacle 5k at Lydiard Park on 1 May 2027 with staggered waves, on course marshals, and a minimum fundraising target.
A hilly, technical Backyard Ultra at Blaise Castle Estate, Bristol, using hourly 4.167 mile laps; the 2027 event is sold out and the waiting list is closed.
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