Trail Running calendar near Harwell 2026-2027

This autumn half marathon takes place on scenic forest trails in the Forest of Dean. The course features no road crossings and offers a unique, slightly hilly route. Organized by the Rotary Club for charity, it provides chip timing and a me..

Trail runs at Salisbury Racecourse across marathon, half marathon and 10k routes through undulating downland, woodland and Martin Down Nature Reserve, with several archaeological features along the courses.

Event Overview The Grantchester Charity Runs is a volunteer-run event supporting Maggie’s Centre Cambridge and Addenbrooke’s Charitable Trust (ACT). It takes place on Mill Way in Grantchester, just outside Cambridge. Distances 10 km 3 km..

A ten mile traffic free trail race at Eridge Park on 27 September 2026 with steep climbs, muddy sections and varied scenery. Organised by Tunbridge Wells Harriers, finishers receive a memento plus cake and a pint.

The Kingfisher Challenge is a flexible six-hour trail run in the scenic Coombe Abbey Park. Run as many 3.3-mile laps as you like on paths through woodland and grassland. Choose your own distance and finish with a medal or a tree-planting to..

South Downs 100 mile (Autumn Event) The South Downs 100 mile is a single-loop trail race through the South Downs National Park. The race starts at Plumpton Racecourse near Lewes in East Sussex. The route features rolling hills with over 12,..

A 30 mile guided trail run on the North Downs Way, starting from St Martha's Hill in Guildford. This group run, ideal for first time ultra runners, explores the Surrey Hills and includes a stop at Box Hill. The experienced guide handles the..

This flat and scenic 50k ultramarathon runs point-to-point from Moors Valley Country Park to Hengistbury Head on 3 October 2026. The multi-terrain course features forest trails and seafront paths. It includes four feed stations, tracking op..

Take on the Epping Forest 50 KM 2026, a scenic 50 km trail challenge through ancient woods on 3 October 2026. Enjoy varied terrain, fresh air and a memorable run just outside London.

Hit the trails at London EcoTrail 25 KM on 3 October 2026 in Epping's Bell Common. Enjoy a scenic 25 km route through woodlands and countryside, perfect for trail runners craving a nature filled challenge.

Night trail races on the South Downs near Plumpton Racecourse, Lewes, offering looped options including a 50 km and a half marathon. The course is fully marked with reflective signage, aid stations and marshals.

A *50 km* point-to-point ultramarathon from Moors Valley Country Park to Hengistbury Head, featuring forest trails, coastal paths and a fully signed flat course. The race includes four feed stations, a GPS route file, medical cover and a 9...

Wild Run Cotswolds showcases rugged off road trails on a private estate with fully marked routes, chip timing and a family friendly supporter zone. Entries are limited to 600; choose 10K, half, marathon or the six hour 360 challenge.

Experience a fast and flat riverside race along the Thames Path trail. Choose from 10km, half marathon, or marathon distances on this scenic out and back course featuring professional support and medals for all finishers.

Event Overview The Marlow Donkey is a challenge event offering three walking route options around the Hambleden and Stonor valleys, starting and finishing in Marlow. It is organized by the Thames Valley group of the LDWA. Routes & Chall..

A flexible 6-hour timed run along the flat Jubilee River towpath. Run one 5.24-mile lap or see how many you can complete. The scenic route passes through countryside with views towards Windsor Castle.

Set in the scenic Sence Valley Forestry Park, this flexible 6 hour event allows you to run as many 3.3 mile laps as you choose. Experience a mix of woodland trails and lakeside paths with distances ranging from 5k to ultramarathon.

Tackle iconic Box Hill on a trail running challenge in Surrey. Choose from 50k, 31k, or 21k distances on a clearly marked course with marshal support. Finish in the event village to collect your medal and post race goodies.

Event Overview The Forest of Dean Ultra Marathon, also known as the FOD Ultra, is a 55 km trail running event. The route is a circular loop that passes through highlights of the Forest of Dean in England. The course is described as varied,..

Explore the Chiltern Hills on this guided trail half marathon. Runners are grouped by ability and led by qualified Run Leaders, with a refreshment point and finisher's medal included. The event starts near Tring Station, just northwest of L..