Welwyn
Trail Running Calendar near Welwyn 2026-2027
Explore the top trail runs near Welwyn for 2026-2027! We've gathered 132 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
A backyard ultra at Turvey House where runners complete a 4.167 mile (6.7 km) loop each hour; failing to start a loop on the hour means elimination. Entries include solo, paired teams alternating loops, and an 8 hour day cap.
Trail half marathon and 10K in Epping Forest on 10 October 2026, with chip timing, aid stations, eco friendly measures and limited parking.
A guided trail half marathon of about 13 miles in the Chiltern Hills with grouped pacing, a midway refreshment point and a finisher’s medal.
A non-competitive, all-surface 25 km loop from Leyton with run leaders, a halfway energy stop, kit demos and community-focused proceeds for Hackney Foodbank.
A scenic approximately 15 km trail race in Tring on 11 October 2026, running through Ashridge Estate and the Ridgeway with marshals, water stations and post-race facilities.
A monthly five mile run in Wimbledon organised by Thames H&H running club, held on the second Sunday of each month with online entries and published results.
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 miles through the Chilterns along canals, reservoirs and past Britain’s oldest post windmill, with trail instruction and a finisher’s medal included.
A lap-based timed run at Old Warden on a flat 5.3 km course with flexible distances, a 7 hour limit, and a no-medal lower cost option.
A 10K night run from Silverworks Island through the Royal Docks to London City Airport runway, women focused and currently sold out.
Off road cross country race of about 6 miles around Manor House Farm in Hardwick, with water crossings, limited to 300 runners and minimum age 17.
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 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.