Trail Running calendar near Colchester 2025-2026

The Zig Zag Challenge is a multi-terrain running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants run laps of a 5.3 km course featuring gravel footpaths and grass areas. The event offers a 6-hour or 4-hour timed format, allowing runners to complete..

The Haughley Festival of Running is an annual event held at the exclusive Haughley Park in Suffolk, offering a range of race distances including 5k, 10k, Half Marathon, Full Marathon, and Ultra Marathon. Now in its fourth year, the festival provides an intimate and self-contained setting with exclus..

The Windsor 50 Ultra Challenge, formerly known as the Easter 50, is a premier UK trail running and walking event held at Windsor Racecourse. Participants can choose from 50km, 25km, or 10km looped routes that showcase scenic views of Windsor Castle, the Great Park, Runnymede, and the Thames Path. Th..

The Chiltern Ridge Classic 50K is a renowned ultra marathon held in the Chiltern Hills, UK, featuring a challenging 51 km trail with 996m of elevation gain. The race starts at historic Berkhamsted Castle and finishes at Hampden Meadow in Wendover, following scenic ridgeline trails through Ashridge E..

The Thames Ring 250 is an iconic 250+ mile ultramarathon loop starting from Goring, following the River Thames into London, then along the Grand Union Canal and back down the Oxford Canal to the finish. Established in 2009, it was the first race of its kind, known for its challenging course and high..

The Other Run, organized by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds, coinciding with the London Marathon day. It offers multiple distance options: 5k, 10k, half marathon, and full marathon. The marathon follows the officially measured, scenic, and mildly undulat..

The Centurion Thames Path 100® is a 100-mile marked point-to-point trail race starting in Richmond, London, and finishing in the grounds of Oxford University. The course follows the scenic Thames Path, offering mostly flat and fast terrain on groomed trails and paved pathways. Runners experience stu..

The Holy Trail Festival of Running, organized by Boghopper Races Ltd, is a new trail running event held at Nicholas Everitt Park, Oulton Broad, Lowestoft, Suffolk. Scheduled for May 9, 2026, it offers three distances: a 50-mile circular route with a 15-hour limit, a 50 km course, and a full trail ma..

The Chiltern Hills 100K is a challenging ultra marathon held in the Chiltern Hills, starting and finishing in Chesham, Buckinghamshire. The 100-kilometer course features an anticlockwise loop passing notable landmarks such as Ashridge Estate, Coombe Hill, and Bledlow Ridge, incorporating sections of..

The Run to the Sea Brighton Ultramarathon is a scenic 50km point-to-point race from Horsham to Brighton seafront, featuring a mix of trails and rolling downs. Known for its stunning views and well-organized setup, the event caters to both beginners and experienced ultramarathoners. The course is ful..

The Zig Zag Marathon and Half Marathon take place at the Suffolk Running Centre in Bury St Edmunds, UK. The marathon follows the officially measured Kirtling Route, a scenic, mildly undulating, fully road-based course, while the half marathon uses the Windmill Route, completing one loop. The event f..

The Halstead & Essex Marathon, established in 1995, is an annual running event held in North Essex, starting at Halstead Leisure Centre. Celebrating its 30th year in 2026, the marathon features a scenic course on low-traffic roads through rolling hills, woods, and farmlands, offering a beautiful and..

The Five Rivers Ultra is a scenic ultra-endurance running event held along the wild North Essex and South Suffolk coastline, finishing in Harwich, Suffolk. It offers three distance options: 100 miles, 50 miles, and 50 km, with generous cut-off times. The point-to-point course features a flat and fas..

The Reigate Priory Park 10K is a scenic charity fun run held in Priory Park, Reigate, Surrey. The course features a 250-meter start plus four laps on a gently undulating, cross-country terrain surrounded by lush greenery, offering a tranquil and inspiring running experience suitable for all levels...

Farmmageddon is an endurance running event held at Hyde Hall Farm, Buntingford. The main challenge is a 100-mile race completed over 32 hours, featuring a 5.3 km loop course that includes trail, grassland, and some tarmac paths. The event caters to all abilities with multiple distance options.Partic..

The RunThrough Marlow Trail Run, held on June 28, 2026, takes place at Marlow Rugby Union Football Club in the scenic Thames Valley. This off-road event offers three distances: Half Marathon, 10K, and 5K, with the 5K consisting of two laps and the others one lap each. The trail features well-marked..