Trail Running calendar near Welwyn 2026-2027

A 50 mile off‑road ultra at Denbies Wine Estate run on a flat-ish 1 mile loop. Chip timed, up to 30 hours to finish, with multiple distance options and a well stocked aid station.

A timed endurance event at Denbies Wine Estate where participants run one mile on the hour for 12 consecutive hours. Attended and virtual options run simultaneously and places for the attended event are limited.

A trail running event at Cranleigh Showground on Saturday 19 June 2027 with routes from 5 km to 53 km across Surrey hills and forests. Fully marked courses, varied outposts, free parking and an event village with food and a non alcoholic be..

A timed trail weekend at Leybourne Lakes on a fully marked 2.5km loop with 6, 12 and 24 hour options plus relays. Race village offers basecamp space, live timing, medical support and finisher medals.

A 5k obstacle course at Trinity Park with muddy climbs, crawls and slides, held in staggered waves. The grassy course is fairly flat and the event requires participants to be 13 or older.

A scenic trail half marathon on National Trust land at Dunstable Downs covering 21.2 km and 450 m elevation. The fully marked course has two aid stations, GPX files available and event facilities at the National Trust centre.

A 24 hour obstacle course at Belvoir Castle on June 26 to 27, 2027, offering individual and 4 person team relay entries, pit crew spectator access, a post event brunch, on course obstacles, and adaptive athlete support.

Cock-a-doodle Dawdle is a lap-based trail event at Hyde Hall Farm on 26 June 2027 offering distances from 5 km to ultra marathon on a 5.3 km loop, with on-course aid, secure parking and finishers' medals.

A women's ultra trail event in the Surrey Hills with out and back routes from Denbies Wine Estate. Three course options, no cut-off times on course, and policies to support pregnant and parenting participants.

Guided *10 km* trail run around the Devil's Punchbowl in Hindhead, Surrey, with hills, views and group navigation. Events take place at dusk or at night with headtorches and cost £22 per person.

Serpent Trail is a South Downs National Park trail running event on 3 July 2027 offering distances from 10 km to 100 km, coach transport to starts, camping, food and a licensed bar at the venue.

The Race for Life Pretty Muddy Brighton will take place in Brighton on Saturday 3 July 2027. You can run 5 kilometers.

Race for Life Brighton at Stanmer Park offers 10k, 5k and 3k routes across fields and woodland with mixed surfaces and inclines. The event includes fundraising support, on-site facilities and a finisher medal.

A 21.1 km off road trail race on 5 July 2026 along The Ridgeway between Wendover and Princes Risborough, with fully marked navigation, two aid station visits and a 4 hour limit.

A flat 10 km trail run through Thursley National Nature Reserve near Thursley, Surrey. Group runs include dusk and night options with headtorch guidance, an entry fee of £22 per person, and kit and torch support available.

The Race for Life Pretty Muddy Stevenage will take place in Stevenage on Sunday 11 July 2027. You can run 5 kilometers.

A Backyard Ultra at Bedgebury National Pinetum & Forest on 16 July 2027, capped at 250 runners. Competitors run repeated 4.167 mile yards each hour until one Last Person Standing remains, with medals and buckles awarded for milestones.

A 125 km waymarked loop following the Pewsey Vale Circular walk with about 1902 m ascent and GPX files provided. Checkpoints appear roughly every 25 km, there is a 24 hour cut off, and camping is available at Linkenholt Activity Center.

A mixed-terrain trail event along the Thames at Remenham Farm on 4 September 2027, offering a half marathon, a 10K and a junior race for under 11s with chip timing and themed medals.

Guided 10 km trail run around Silent Pool near Guildford, following parts of the North Downs Way and Netley Heath forest. Sessions run at dusk or at night with headtorches in a led group and a recommended pace of about 10 min per mile.