Trail Running calendar near Grafham Water 2025-2026

North Chilterns 50K is Runaway Racing’s 50-kilometre trail ultramarathon based at Putteridge Bury Country House (LU2 8LE). The course follows the Chiltern Way toward Lilley, then Warden and Barton Hills, before heading to Pegsdon Hills and Offley, finishing with final 12 km. Runners enjoy undulating..

West Acre Wild 10k Challenge is an off-road 10-kilometre race set in Westacre, Norfolk. The course winds through undulating bridle paths and woodland tracks, with a short paved section at the start and surfaces that can be wet or muddy after rain. Optional obstacles add variety, and the route finish..

The Marlow Donkey is a challenge event on Sunday 12 October 2025, organised by LDWA - Thames Valley and based at Liston Hall, Chapel Street, Marlow, Bucks SL7 1DD. The routes run in the Chiltern Hills with a new figure-of-eight route centred on Lane End. The aim is to complete, on foot, a route of..

The Tarmac Twister Trail takes place on 15 October 2025 and is organised by Essex Trail Events. The route is approximately 6 miles and the minimum age is 16. The event holds TRA permit 7706. It is a self-navigation trail race using a written route description that will be issued on the night. The c..

The Gatliff Marathon is an annual cross-country challenge in Kent, Surrey and Sussex, organized by the COPSE Club (Croydon). Participants may choose 25km or 50km, walking, jogging or running mostly on footpaths and tracks. Each year features a different route; route descriptions and GPX files are pr..

The Carsington Water Half Marathon & 10K takes place on Saturday, 18th October 2025 at Carsington Water, Ashbourne DE6 1ST, UK. The organiser offers the following race options and prices: 10K : £28 Half Marathon : £30 10K inc T-shirt : £40 Half Marathon inc T-shirt : £42 Group booking (6 place..

Amberaid 30 Trail Race and Petit Raid, by First Light Adventure, takes place from Ashover Village Hall, Ashover, Derbyshire (Amber Valley, near the eastern edge of the Peak District). The event offers two routes: Amberaid 30—a 31-mile trail run through undulating countryside and woodland on a figure..

Centurion Autumn 100 is a 100-mile continuous trail race based in Goring-on-Thames and Streatley. The course forms a cross from four 25-mile out-and-back spurs along the Thames Path and Ridgeway, converging at Goring. Legs run Thames Path to Little Wittenham, Ridgeway to Swyncombe Farm, Ridgeway to..

Dukeries 10 is a one-lap trail race held on Saturday 18 October 2025 at Walesby Sports & Social Club, Forest Lane, Walesby, Newark, Nottinghamshire NG22 9PF. Entry is priced at £28.00 and the field is limited to 250 runners. Entrants must be 17 or older. There is a cut-off time of 3.5 hours. Wa..

High Lodge Half Marathon – Autumn is a 13.1-mile circular trail race in Thetford Forest at High Lodge, Brandon, IP27 0AF. The multi-terrain course combines hard-packed trails, forest paths, sand and grassy footpaths, delivering woodland scenery for road runners and trail enthusiasts alike. The event..

Viper 5 mile trail run (Autumn edition) is held near Ingatestone, Essex, at The Viper in Mill Green. The 5-mile loop traverses countryside on public rights of way and is run in the dark, using the same course as the spring edition. It’s a small-capacity event (50 places) with first-come, first-serve..

Running Tribe Races in Buckinghamshire, England, offers endurance events at two venues: Courses 1–3 at Chalfont Park Sports Club in Chalfont St Peter and Courses 4–6 at Chalfont St Peter Community Centre. Runners can choose, on the day, from 7k, 10k, 14k, Half Marathon, Full Marathon, or a 30- or 40..

Thames Trail Ultra is a 47-mile point-to-point ultramarathon along England’s longest river, from Hawkwell House Hotel in Iffley to the YMCA Y Centre in Henley-on-Thames. The route follows the Thames Path and Ridgeway National Trails, offering a mix of cross-country trails, riverside paths, and a sma..

Blackwater Marathon 2025, organized by the LDWA Essex & Herts Group, takes place on Saturday 25 October at Drapers Farm Sports Club, Heybridge, Essex. This 25th edition features two circular routes: 26.5 miles and 18 miles, run on cross‑country footpaths and seawall sections on the north side of the..

Epping Forest Wildwood Trail Series Half Marathon & 10K takes place in Epping Forest, London, with start/registration at Chingford Plain, Rangers Road, E4 7QH. Runners choose between a Half Marathon (two laps) or a 10K (one lap) through ancient woodland in autumn colors. The course blends well-maint..

The Worcester Ring Run is a 23-mile running tour around Worcester and Droitwich, launching in 2025 at Droitwich Rugby Club. The clockwise route travels from the club along the Droitwich Canal, joins the Worcester & Birmingham Canal toward Worcester, passes Diglis and Diglis Bridge, goes through Pitc..

Thames Path Trail Run takes place at Windsor Racecourse, Windsor, UK. The event offers two trail distances: 21km and 16km, with gentle elevation gains of about 66m and 50m respectively, along the scenic Thames riverbank and surrounding countryside. Runners begin at Windsor Racecourse and follow clea..

Stort30 is a 30-mile ultramarathon organized by Challenge Running, set on the Hertfordshire–Essex border along the River Stort and the Lee Navigation. The course is flat and mostly grassy, running 15 miles out and back from Bishop’s Stortford to the Rye House area, with a turnaround at the halfway p..

Pumpkin Plod is a timed running event held at Ferry Meadows, one of the largest country parks near Peterborough, UK. Participants run laps of a 5.3 km multi-terrain course featuring gravel footpaths and grassy areas through the forest. The event offers two options: a 6-hour or 4-hour challenge, wher..

Irchester Spooktacular is a Halloween-themed night-time run on Thursday 30 October 2025 at Irchester Country Park. The event uses established woodland trails and tracks that are fully marked and marshaled, with marshals in themed costume. The surface is mostly hard packed track and is suitable for..