Welwyn
Trail Running Calendar near Welwyn 2026-2027
Explore the top trail runs near Welwyn for 2026-2027! We've gathered 121 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
A 10 km trail race in Sandridge, St Albans on 13 September 2026, starting and finishing at Sandridge Primary School playing field. Organizers publish route information and FAQs, and the event is supported by Sandridge Parish Council.
A lapped 7 hour trail event on a 5K loop in Hitchin with a Mini Mile and virtual option, event village, aid station and post event massage.
A marathon and half-marathon along the Ouse Valley Way in Huntingdonshire on 20 September 2026, finishing at Earith on mostly flat grass, gravel and tarmac paths. The races are registered with the Trail Running Association and insured under England A..
A timed lap event in Crystal Palace Park where runners complete 2.65 km laps within a seven hour limit, choosing distances from 5 km to ultra. The off road course mixes tarmac and gravel and all participants receive a bespoke finishers medal.
A five mile trail run on 24 September 2026 at The Viper in Mill Green near Ingatestone. Limited to over 18s with a small field; participants must be self sufficient with phone and headtorch and a tail runner is on course.
An overnight backyard ultra at The Waggoners in Welwyn Garden City featuring a repeating 4.167 mile trail loop, official timing, drink vouchers, a commemorative pint glass and a pub athletes menu.
Rural chip timed 10k and 3k near Grantchester supporting Maggie’s and Addenbrooke’s Charitable Trust with medals, trophies and on site health services.
Timed multi lap event at Regatta Meadow in St Neots on a 5.3 km out and back course, offering distances from 5 km to ultra. Participants decide how many laps to run and all receive a finishers' medal.
October 2026
A 50 km Epping Forest event in London on 03 October 2026, listed as part of Camino Ultra’s 2026 events.
London EcoTrail 25 km is a trail running event in Bell Common, Epping on 03 Oct 2026. It is organised by London based ultramarathon event company Camino Ultra as part of their 2026 events.
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.
A half marathon and 10K through Epping Forest, London on 10 October 2026, run on marked woodland trails with aid stations, chip timing and an eco friendly focus.
A scenic approximate 15 km trail race in Tring on 11 October 2026, routed through Ashridge Estate, the Ridgeway and Pitstone Hill with water stations and finish facilities.
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.