Trail Running calendar near Hertfordshire 2026-2027

A 10 km multi terrain race from Windsor & Eton Brewery along Baths Island and Thames towpaths. The course is about half off road and the finish includes a pint cup and a free drink.

Coastal trail running from Eastbourne along the Seven Sisters with 10K, half, marathon and ultra options. Courses cross chalk downland and forest, are fully marked, timed, and form part of the Endurancelife season leaderboard.

Explore the scenic Northamptonshire countryside with 10k and Half Marathon trail races at Pitsford Water. Enjoy fully marshaled routes through local villages and alongside the water with professional on course support.

Harrold Odell hosts fully marked, fully supported trail races on 13 March 2027 in 25 km and 50 km distances. Generous cut-offs and runnable terrain aim to reduce navigation and pacing concerns for participants.

Multi distance trail event at Hyde Hall Farm on 13/03/2027 offering 10k, half, full and ultra options. The course uses farm grounds with laps, an aid station, secure on site parking and a bespoke finisher medal.

Celebrate International Women’s Day with an all female trail run at the beautiful Culden Faw Estate. Choose from three distances featuring rolling hills and woodland paths in an inclusive environment.

A short out and back carrying race on The Nower in Dorking with a 380 m course and 15 m ascent. Adult pairs follow a weigh in and helmet rules; prizes include a barrel of local ale and novelty awards.

A 13.1 mile cross-country trail from Dorking to Leith Hill Tower and back, with about 1,800 ft of ascent. Entry includes water stations, a personalised number, a reusable medal, post-race beer and a cooked breakfast.

Twelve consecutive days of timed riverside running in Walton on Thames with multiple distance options, collectible daily lantern medals, finishers shirts, and a Double-Down option to run two half marathons each day.

A 50 km trail ultra from Stonor Park through the Chilterns, run over two 25 km loops with 4000 ft of climb, five aid stations, full medical support and a 9 hour cut off. Medals to finishers and prizes by overall and age category.

Trail races on the South Downs Way on 20 March 2027 with 50 mile, 50 km and marathon options, marked courses, aid stations and coach transport between finish and start.

Trail races around Stansted House take runners through South Downs scenery with wooded sections, open fields and views of the historic house; multiple distances are offered and all finishers receive a metal medal and a gift.

Five days of timed running on certified River Thames routes in Walton on Thames, with flexible lap choices from 5 km to ultra distances, daily time limits, aid station, multi-day Lantern medals and finisher t-shirts.

Riverside mixed terrain half marathon, 10K and junior race on 10 April 2027 at Remenham Farm in Henley on Thames. Marked kilometres, lap formats vary by distance, and entries include a themed medal and chip timing.

A Star Wars 50th Anniversary weekend on 5 and 6 June 2027 at Caldecotte, Milton Keynes featuring marathon and half marathon races around Caldecotte Lake, unique finisher medals, on-course water and toilets, and time limits for each race.

On 4 September 2027 at Remenham Farm, Henley-on-Thames, a mixed-terrain half marathon, 10K and junior race follow a riverbank trail with kilometre markers, chip timing and on-course marshals for guidance.