Trail Running calendar near Welwyn 2026-2027

A muddy 5K obstacle event in Brentwood on 11 July 2026 featuring climbs, water crossings and a 20 foot slide into a lake. Open to ages 13 and over, with a £40 registration fee and a £100 fundraising pledge.

Multi-distance lap races at Bawsey Country Park from 5k to ultra marathon on sand, gravel and grass. Aid stations are available every lap and parking is included.

A multi-lap running event at Box End Park in Kempston with three race options of repeated 5 km laps, race medals, on-course support and awards across overall, female and age-group categories.

A guided 18 mile trail run on 12 July 2026 along the Kett's Country Long Distance Trail from Wymondham to Cringleford, combining local history and wildlife. The event is non-competitive, run at a conversational pace with aid stations and a..

A 7-mile multi-terrain race through Knole Park with a chip-timed 3.5 km junior run for ages 9 to 15. Profits support The Running Charity and the event includes medals, free photos and prizes for top finishers.

Community fundraising runs at Abington Park with chip timing and a mixed pathways and grass course. Distances include 10 km, 5 km and 3 km and participants have a minimum fundraising target of £50.

A weekend trail running festival at Mill Farm, Lurgashall, featuring 50 km, marathon, 16 mi, 12 km and a 2 km LittleFeet run, with camping, glamping, on-site village activities and stocked aid stations including PH1000 electrolyte.

Trail runs of 10K, 5K and a 1.5K accessible loop take place at Wendover Woods on 18 July 2026. Proceeds support the Chilterns Neuro Centre and the courses are fully marked and marshalled.

A 24 hour trail running and camping weekend on the Shotley peninsula with a fully marked 4.3 mile coastal lap. Entries are available for solo runners, pairs or teams up to six and camping at race HQ is included in the entry.

A weekend running festival at Blackland Farm on 18–19 July 2026 offering 1-mile lap formats: 24-hour and 12-hour solos, team relays, plus P24 and P12 paced challenges. Off-road course, camping included and limited Bell Tent upgrades.

MacTuffX Brighton at Withdean Stadium on 18 July 2026 combines ten functional Xercises with repeated running segments in Solo, Doubles, or five-person Relay formats, with standard and LITE weight divisions for entrants aged 18 and over.

Pretty Muddy 5k at Tilgate Park in Crawley is an obstacle course around Tilgate Lake with climbs, crawls and slides. The event raises funds for Cancer Research UK and offers on-site toilets, refreshments and parking.

A muddy 5k obstacle course at Stoke Park in Guildford on 18 July 2026 with staggered wave starts. Entry fees and a minimum fundraising target apply; participants must be 13 or older.

A vineyard run and walk at Denbies Wine Estate near Dorking with trails across the North Downs, followed by stone baked pizza and a Denbies wine tasting. Trail shoes recommended and free parking is available at the estate.

Trail event at The Compasses, Littley Green covering about a half marathon through the Essex Way and the Chelmer Valley. Self-navigated with a written route, staggered starts and finishes, with profits to Crohn's & Colitis UK.

Fully marked trail races at Winwick Hall feature 10k and 5k routes plus a 2k children’s fun run. Courses cross grassland and country paths, on-course support and charity donations to the Bruce Green Foundation are part of the event.

A chip timed 10 km race around Highfield Park and the Alban Way in St Albans on 19 July 2026. The event village features a free family fun run, kids zone, live music and a charity partnership with Alzheimer’s Research UK.

A trail event at Pippingford Park Manor offering 10 mile and 5 mile options on hard packed forest trails with about 1568 ft of climbing. The route includes notable climbs and descents, bespoke medals for finishers and free parking.

A trail half marathon and 10k on Wimbledon Common on 19 July 2026, with marked miles, marshals and a 3.5 hour cut off. RunThrough provides an event village, finish-line goodies and an optional event t-shirt.

A six hour trail running challenge on a just over 5K 3.3 mile loop mostly off road through fields and vineyards with views of the River Crouch. Chip timed and fully marked, with one checkpoint per loop and a finisher medal.