Welwyn Garden City
Trail Running Calendar near Welwyn Garden City 2026-2027
Explore the top trail runs near Welwyn Garden City for 2026-2027! We've gathered 155 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
Trail Half Marathon and 10K in Epping Forest, London on 10 October 2026 with marked routes, chip timing, eco measures, and limited parking.
Trail half marathon in the Chiltern Hills covering 13 miles with 300 m ascent, led groups, a midway refreshment point and a finisher’s medal.
An all-surface 25 km loop from Leyton with run leaders, a midway energy stop and post-run kit and community space at Portal HQ.
A scenic approximate 15 km trail race around Tring and the Ashridge Estate with marshals, water stations, team prizes and a finisher snood.
Timed, lapped run at Old Warden on 16 October 2026 with flexible start times, distances from one 3.28 mile lap to ultras and a seven hour limit.
A guided 10 mile trail through Chilterns waterways and reservoirs, passing Britain’s oldest post windmill, with trail instruction and a 2026 finisher’s medal.
An off road cross country race of about 6 miles across Manor House Farm in Hardwick village with varied terrain and water crossings. Entries are limited to 300 runners and a minimum age of 17 applies.
A lap-based timed charity run in St Neots on a 5.3 km out and back course, held in partnership with a local school and the charity KiSS. Multiple distance options are available and Phoenix Running will donate five pounds from each entry to support Ki..
Conquer 58 floors and over 1,500 steps at 22 Bishopsgate to support RNLI lifeboats while enjoying panoramic views of the London skyline.
A 30 mile out and back trail ultra along the River Stort with checkpoints every 5 miles, enforced halfway and overall cut offs, electronic timing and finishers medals.
Looped events where runners choose how many laps to run on the day, with maps, aid stations every lap and distances from 5K to 50K across several venues.
A 10 km night-time self-navigation trail around Thaxted from The Maypole, open to walkers and runners; entry fees include a drinks voucher and support John Webb’s Windmill restoration.
A single loop 50K trail across the Chilterns from Berkhamsted with 800 m ascent, three staffed checkpoints and a 9 hour cutoff on 31 October 2026.
An evening timed run at Riverside Park in St Neots on Halloween offering laps of a 5.3 km out and back course. Head torches are compulsory and all participants receive a finishers medal, with distances from one lap to ultra.
November 2026
Trail races in Wendover Woods on hilly, multi terrain forest loops with marathon, half marathon, 10 km and a junior run plus on site amenities and parking.
Two days of marathon and half marathon races around Caldecotte Lake in Milton Keynes on 6 and 7 November 2026, with multi-lap clockwise courses, on-course water and toilets, enforced time limits, and bespoke finisher medals.
A November muddy obstacle event in Brentwood Essex with 6 km, 12 km and 24 km plus options across farmland, woods and lakes featuring 40 to 200 plus obstacles.
Experience a scenic trail run through the Bedfordshire countryside with a choice of a half marathon or metric half marathon along the Grand Union Canal and woodland paths.
A trail event in Windsor on 8 November 2026 offering a 10K and a half marathon on flat off road trails from Alexandra Gardens. The event features chip timing, race photos, post race goodies and an event village.