Trail Running calendar near Marlow 2026-2027

A marathon and half marathon along the Ouse Valley Way in Huntingdonshire on 20th September 2026, finishing in Earith. Both routes are very low elevation and run on grass, gravel and tarmac with route maps and GPX files available.

A looped trail event in the Chilterns with a 50 km main route plus 25 km and 10 km options. Henley Showground basecamp offers camping, catering, shuttle services, rest stops, medical cover and GPS tracking.

A 10 mile trail race at Chilton Manor Farm with a one mile yew tree lined finish, mixed off-road terrain and views toward Winchester and the South Downs. Entry includes a sustainable finisher medal, timed results and water stations.

An autumn farm run in Colchester offering 10K, 5K and a family 1K on mostly flat, traffic-free farm tracks with chip timing, an event village and on-site parking.

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.

Volunteer run charity 10k and 3k in Grantchester on 27 September 2026 supporting Maggie's Centre Cambridge and ACT. Courses run on farmland with chip timing, medals for finishers and on site refreshments.

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 at Coombe Abbey Park. Participants choose their distance by completing laps of a flat 5k course through woodlands and meadows. The event offers a unique tree token alternative to the..

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,..

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.

Riverside out and back races along the Thames Path from Petersham & Ham Sea Scouts, offering 10 km, half marathon and marathon distances on a flat, well marked trail shared with the public.

Wild Run Oxford is planned for 4 October 2026 (TBC) on Oxford's nearby trails, with a 10K and a Half Marathon on mixed smooth and rugged terrain; the event is licensed by the Trail Running Association and UK Athletics.

A challenge event in and around Marlow on 4 October 2026 offering 25 km, 40 km and 50 km routes through the Chilterns, organised by LDWA Thames Valley with checkpoint refreshments, a finish meal and limited entry.

A guided 30 mile trail run from St Martha's, Guildford along the North Downs Way via Box Hill and Denbies Wine Estate. Group-paced with coaching support; participants should have completed long training runs and carry suitable kit.

Looped 50 km, 25 km and 10 km routes from a Maidstone basecamp travel the North Downs Way, the River Medway and past Leeds Castle with covered rest stops, GPS tracking, camping and finisher medal and t shirt.