Trail Running calendar near Great Waltham 2026-2027

A fully signed 50k trail ultra on the North Downs Way and Norbury Park reserve with 2986 ft total ascent and four checkpoints. The race is based at Denbies Wine Estate near Dorking and is open to runners aged 16 and over.

A marathon and half marathon on the largely traffic-free Marriott's Way, supporting the East Anglian Air Ambulance, with coach transport available, finisher medals, on-route aid and prizes for top finishers.

A multi-distance running festival at High Lodge, Thetford Forest with looped 5 km laps, on-course aid, post-run tea, coffee and cake, and bespoke medals for finishers.

A two-round multi-terrain event in Northamptonshire offering multiple lap-based distances at Irchester and single-lap routes at Brigstock, with mixed trails, a notable hill, and a finisher medal for each round.

A timed lap event in Crystal Palace Park on 21 February 2027 where runners complete 2.65 km laps to reach distances from 5 km to ultra, with a seven hour limit and a finishers' memento for all participants.

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.

A running event at Newlands Corner in Guildford on 27 February 2027 offering 10 km and 15 km options, organised by G3 Series. Entry fees and series bundle options are available.

A 42-mile trail race from Chipping Ongar to the ancient Chapel of St Peter-on-the-Wall, following an old pilgrimage route through rural Essex. Mostly off-road and often muddy, the route is waymarked with GPX support, four outdoor checkpoint..

Looped 7K and 10K courses in Chalfont St Peter and Gerrards Cross let runners choose distances from a single loop to ultramarathon. Aid stations, marked routes, crew access and medical support are provided, with prizes for top finishers in..

A 10 km mixed-terrain run from Windsor & Eton Brewery along towpaths and parkland, with staggered starts, a pint cup and free drink at the finish, chip timing and downloadable race photos.

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.

Coastal trail event in Eastbourne on 6 March 2027 with 10K, half, marathon and ultra routes along the Seven Sisters cliffs. Part of the Endurancelife season leaderboard with online pre-event check-in and varied chalk and forest terrain.

Trail races at Brixworth Country Park over 10k and half marathon, fully marked and marshaled, with multiple water stations, first aid cover, and prizes for top finishers.

Autumn edition of the Run the Wild half marathon is a guided 13 mile trail in the Chiltern Hills with about 300 m ascent, grouped pacing, run leaders, a midroute refreshment point and a finisher’s medal.

Two trail race distances, 25 km and 50 km, at Harrold-Odell Country Park in Bedford on 13 March 2027, organised by Thunder Races with early-bird and standard fees and instalment options.

Trail event at Hyde Hall Farm offering 10k, half, full and ultra distances with lap-based courses, water at the lap point, secure parking and a bespoke finisher medal. The event is cupless so bring a refillable cup or bottle.

A 24 hour endurance challenge at Alice Holt Forest where runners repeat a 6.7 km loop each hour, finishing each lap within 60 minutes. Multiple distance options are offered and wooden medals are given to participants.

TrailX Women Run is an all female trail event at Culden Faw Estate near Henley on Thames celebrating International Women’s Day, offering 3 km, 6.5 km and 13 km chip timed courses with medals, prizes and on site refreshments.

A novelty wife carrying race in Dorking featuring a 380 m out and back up The Nower with obstacles and a Splash Zone. Carried participants must meet a 50 kg minimum and wear helmets while competitors are encouraged to wear fancy dress.

A hilly 13.1 miles out-and-back trail from Dorking to Leith Hill Tower with about 1,800 feet of ascent, water stations and marshals. Race HQ is The Priory School and entry includes a postrace cooked breakfast and a reusable medal.