Trail Running calendar near Boreham 2026-2027

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.

The Run Sandringham Half Marathon on 27 September 2026 features a 13.1-mile route through the Sandringham Estate. Organized by Good Running Events, it supports charities and is part of a series with scenic trails.

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.

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 unique 20-mile trail run starting and finishing inside historic Landguard Fort. The looped route passes through nature reserves, estuaries, and a port. Runners receive a long-sleeve shirt and medal.

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.

Run a scenic 5-mile trail through Cawston Park estate to support Norfolk Lowland Search and Rescue. This chip-timed, off-road race offers prizes for top finishers and a memento for all. On-site parking and refreshments are available, with p..

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..

Explore the scenic paths and bridleways of Norfolk in this multi-terrain 10K and 5K event. Every runner receives a bespoke medal, and all profits support the local Millennium Green. The community-focused race offers refreshments, a play are..

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.

Tackle the Kent Downs on Saturday, 10 October 2026. Choose from 50 km, 25 km, or 10 km looped routes starting from the Maidstone basecamp. Enjoy full support with rest stops, food, and a celebratory finish line.

The Suffolk Coastal Trail Run offers a flat, fast course through varied coastal landscapes near Dunwich. Choose from four distances, from 10K to Ultra, on October 10, 2026. It's part of a seasonal series where runners can earn points for a..

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.

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..