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 148 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
A 12 hour multi terrain loop event at Riverside Park St Neots with solo pair and team entries plus festival activities awards and a unique finisher medal.
Riverside races from Barnes along the Thames Path offering 10 km, half marathon and marathon courses with marked routes and checkpoint support.
The Stopsley Trail Race on Sunday 9 August 2026 offers 5K, 5 miles and 10 miles on scenic undulating trails along the Bedfordshire and Hertfordshire border. Entries include chip timing, bespoke medals, free photos and participant goodies.
Free Backyard Ultra at All Work Training in Ruislip: 5 km each hour for six hours; sign up is now closed.
A guided 10 km summer trail run in the Chiltern Hills followed by a Tring Brewery tour and tasting, with pizza available to purchase.
Evening trail events in Chelmsford on 17 Aug 2026 offering a 10 km trail run, a 10 km social hike and a timed 15 km hike supporting the British Heart Foundation.
Trail races at Wendover Woods feature a half marathon, 10k, 5k and junior race across steep woodland with 181 m of climb. Entries include a themed medal, free photos, chip timing and post race goodies.
Half and full marathons in Richmond Park on 23 August 2026, with multi-lap routes along the Tamsin Trail, refreshment points and UK Athletics affiliation.
A trail half marathon from Creasey Park across the Dunstable Downs, run mainly on footpaths and bridleways. The self navigated course includes checkpoints and guide runners, a GPX file, on course drink stations and event facilities.
Two self-navigation trail races in Chelmsford on 23 August 2026: the hilly Admiral McHilly Trail of about 16 miles and the flatter Chelmer Trail of about 6 miles, with written route instructions and no course markings.
30 August 2026 in Alexandra Gardens Windsor offers 10K and half marathon routes with views of Windsor Castle. The event includes chip timing, free race photos and an event village.
MacTuffX Bedford on 30 August 2026 combines ten Xercises with repeated 400 m or 800 m runs across solo, doubles and five-person relay formats.
September 2026
Mud Tribe is a muddy obstacle-course event near Brentwood, Essex offering 1.5 km and 5 km options with foam, achievable obstacles, finish-line facilities and a female-only wave; under-15s require a paying adult.
A women only muddy obstacle course in Brentwood, Essex covering 5 km with varied obstacles, wash facilities, a finisher medal and an inclusive, non competitive format.
An ultra endurance event in Heartwood Forest where participants cover four mile loops within a 12 hour window, solo or in relays up to eight people. Winners are decided by distance and all finishers receive a medal.