Trail Running calendar near Harwell 2025-2026

The Ridgeway Run, organized by Tring Running Club, is a challenging 15-kilometre (9.3 miles) trail race set in the scenic Chiltern Hills near Tring, UK. The course starts on the outskirts of Tring, ascending through the Ashridge Estate, passing landmarks like the Bridgewater Monument, and includes s..

The Buckingham 10K is a scenic running event held in Buckingham Town Centre, featuring a 10-kilometer multi-terrain route. The course starts in the town center and passes through Stowe Avenue, the Stowe National Trust Gardens, and surrounding farmland, offering an undulating profile through both urb..

The Gatliff Marathon is an annual challenge event held at Edenbridge Cricket Club in Kent, UK, featuring 25km and 50km distances. Participants can walk, jog, or run mostly on footpaths and tracks through the scenic countryside of Kent, Surrey, and Sussex. The course varies each year, with route deta..

The Autumn 100 is a 100-mile continuous trail race held in the twin villages of Goring and Streatley on the River Thames in South East England. The course forms a cross shape, consisting of four 25-mile out-and-back sections along the Ridgeway and Thames Path National Trails. Runners face a mix of 2..

The Forest of Dean Ultra Marathon will take place in Coleford on Saturday 18 October 2025. You can run 34 miles.

The Maverick Jurassic Coast 2025 is a trail running event held in Corfe Castle, Dorset, along the scenic Isle of Purbeck and part of the renowned 95-mile Jurassic Coast. Participants can choose from four distances: Ultra (102 km), Long (54 km), Middle (24 km), and Short (12 km), each featuring chall..

The White Horse Gallop is a challenging approximately 12K off-road race held near Westbury, Wiltshire. The course runs along bridle paths and the Imber Range, offering runners close views of the iconic Westbury White Horse. This event is part of the Wiltshire Off Road Race League and is open to runn..

The Keynsham Dandy is an off-road running race organized by Town and Country Harriers (TACH) in the Bristol area. The event covers approximately 12.5 miles, starting in Keynsham and featuring a scenic route that includes the revival of the Compton Dando section, complete with a stream crossing. The..

The Black Bull 15 Trail Runs is a running event held in Chelmsford, Essex, United Kingdom, organized by Multisport-Management and Steve Cope. The event features a 15-mile loop through local countryside and country roads, starting and finishing in the garden grounds of the Black Bull pub. There is al..

The Viper 5 Mile Trail Run is a nighttime trail running event held in Ingatestone, United Kingdom, organized by Multisport-Management. The race covers a 5-mile loop through countryside public rights of way, following the same route as the spring edition but run in the dark. Participants must be over..

The Giddy Horse Backyard event is a unique running experience taking place at Chepstow Racecourse in Piercefield Park. Scheduled for October 25, 2025, it features various race formats including 8-hour, 12-hour, 24-hour, and relay options, all set on a scenic 4.167-mile loop that combines woodland, p..

The Worcester Ring Run is a 23-mile running event held in Droitwich, United Kingdom, organized by Pulse Events. The 2025 edition starts and finishes at the Droitwich Rugby Club, featuring a scenic clockwise loop along the Droitwich Canal and Worcester & Birmingham Canal, passing landmarks such as Di..

Running Tribe Races take place in Chalfont St Peter, Buckinghamshire, at two locations: Chalfont Park Sports Club and Chalfont St. Peter Community Centre. The event offers flexible distances ranging from 7k up to an ultra marathon, with participants choosing their distance on race day.The courses ar..

The Epping Forest Wildwood Trail Series offers a scenic half marathon and 10K trail run set in the heart of Epping Forest near London. Scheduled for October 25, 2025, the event showcases the vibrant autumn colors and ancient woodland. Runners navigate a varied course featuring well-maintained paths,..

The Thames Trail Ultra is a challenging 47-mile point-to-point ultra-marathon along England’s longest river, the Thames. Starting near Oxford in Iffley and finishing at the YMCA Y Centre in Henley-on-Thames, the course follows the scenic Thames Path and Ridgeway National Trails. Runners experience a..

The Thames Path Trail Run takes place at Windsor Racecourse, offering scenic routes along the picturesque Thames River and surrounding countryside. Participants can choose between two distances: 21km and 16km, both featuring gentle elevation gains (+66m and +50m respectively). The event welcomes run..

The Giddy Horse Half Marathon, Trail, & Steeplechase Obstacle Course Races is an exciting running event taking place on October 26, 2025, at Chepstow Racecourse in the UK. Participants can choose from various race options, including a half marathon, 8-mile and 4-mile trail races, and steeplechase ob..

The Stort30 Ultra is a scenic 30-mile ultra marathon held on the border of Hertfordshire and Essex, starting and finishing at the Hockerill Sports and Social Club in Bishop's Stortford. The course follows a flat, out-and-back route along the River Stort and Lee navigation, featuring mostly grassy tr..

The Irchester Spooktacular is a Halloween-themed night-time running event held at Irchester Country Park. It features two distances: a 5k race and a 2k Family Fun Run, both set on fully marked woodland trails and tracks. Participants are encouraged to wear fancy dress, with prizes awarded for the be..

The Guided Run - Petersfield 10k will take place in Petersfield on Saturday 1 November 2025. You can run 10 kilometers.