Welwyn
Trail Running Calendar near Welwyn 2026-2027
Explore the top trail runs near Welwyn for 2026-2027! We've gathered 141 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
A flat 30 mile out and back ultra along the River Stort with checkpoints about every 5 miles, electronic timing, finishers medal and trophies for top three men and women.
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 narrative night time trail around Thaxted, self navigated and timed, starting and finishing at The Maypole with proceeds to John Webb's Windmill.
A single-loop 50K trail race from Berkhamsted through The Ridgeway and Ashridge, with 800 m ascent, fully marked navigation and three on-route aid stations.
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
Autumn trail races at Wendover Woods offering Marathon, Half Marathon, 10k and Junior Run on hilly, multi-terrain loops with on-site facilities and a six hour cut off.
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.
Nuclear Fallout on 7 November 2026 at Nuclear Essex offers 6 km, 12 km and 24 km plus muddy obstacle courses across farmland, woods and lakes.
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.
Join a community of runners at Richmond Park for a series of timed races supporting Movember. Enjoy a hilly tarmac course with distances ranging from a kids mini run to a half marathon in a supportive atmosphere.
Second Sunday 5 on 8 November 2026 at Richardson Evans Memorial Fields, Putney Vale, a relaxed two lap run organised by Thames Hare & Hounds.
Torchlit 5 km charity trail on 11 Nov 2026, supporting Whizz Kidz with a countryside route and a pub finish; places are limited.
LUCA XC Race 2 is scheduled at Wimbledon Common, London on 11 Nov 2026, organised by London Unis and Colleges Athletics with start lists and scores published.
A three day, 84 mile ultra along the Ridgeway from Buckinghamshire to Wiltshire with overnight stops, accommodation options and checkpoint support.
Lap based timed run along the Grand Union Canal in Harefield on 14 November 2026, using a 3.28 mile lap with distances from 5 km to ultra.