Trail Running Calendar South East (England) 2026-2027

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.

A sold-out cross country 10k across the Ridgeway and Chiltern Hills with steep climbs and twisting single-track descents. Open to runners aged 16 and over and run under TRA and UK Athletics rules.

A guided trail run of 15 miles from Cuckmere Haven to Beachy Head on Sun 12 Jul at BN25 4AD. Organised by Trail-Run Explorers, cost £15.

A four-race summer series at Dinton Pastures offering 5 km, 10 km and a 2 km kids event. Off-road, traffic free course with chip timing, medals, marshals and on-site support.

A weekend trail running festival in West Sussex offering 50 km and marathon options plus shorter runs and a 2 km family Flower Trail, with campsite and glamping, marked single-lap courses and stocked aid stations.

An evening trail race at Wendover Woods on 18 July 2026 supporting the Chilterns Neuro Centre. Options include 10 km, 5 km and an accessible 1.5 km loop, with marked trails, chip timing and a water stop on the 10 km route.

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 prescribed Xercises with repeated runs in Classic and double distance formats, with solo, doubles and five person relay entries and a LITE weight division option.

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 group trail run from Dorking Station through Denbies Wine Estate and the North Downs, followed by stone baked pizza and a guided Denbies wine tasting. Options include an 8 km loop or a 5 km walk.

A trail running event at Pippingford Park Manor with 10 and 5 mile options on hard packed forest trails, 1568 ft of ascent, notable climbs and downhills, route maps and GPX files, bespoke medals, and free parking.

A hilly multi loop trail event around Holmbury Hill offering a half marathon and a same day 10 mile option, with six drink stations, first aid support, free parking, and a commemorative medal for finishers.

A chip timed five mile trail race through Queen Elizabeth Country Park in PJC's 50th anniversary year, with woodland terrain, refreshments, and a capped field of 250 entrants.

A 10 km mixed-terrain event around Valley Park and Knightwood split into five timed stages, featuring chip timing, marshals, a kids Twiglet Tour, on-course water and food at the finish.

A seven hour timed event on 24 July 2026 along the River Thames where runners choose their distance from a 3 km minimum up to 50 km, with medals, goody bags, aid stations and distance pins for longer achievements.

A Friday running event on a flat 5.3 km out-and-back riverside lap near Walton on Thames offering distances from 5 km to ultra and finishers' medals including spinning Rubber Ducky designs.

A timed, lap format run along The Itchen Way in Winchester with a professionally measured, permitted course. Runners may complete multiple 2.62 mile laps up to ultra distance and receive a bespoke finisher's medal and aid station provisions..

Trail races from Queen Elizabeth Country Park across sections of the South Downs Way, offered at 12K, 25K and 50K, with marked routes, stocked aid stations, marshals and a serviced event village plus chip timing and finish medals.

The Bright Skies - Surrey Hills will take place in Dorking on Sunday 26 July 2026. You can run between 5 and 42 kilometers.