Trail Running calendar near Sunbury-on-Thames 2025-2026

Shires and Spires is a celebrated multi-terrain running event held in Northamptonshire, starting and finishing at historic Naseby Village Hall. The race offers five distances: 10K, half marathon, three-quarter marathon, marathon, and a 35-mile ultra marathon, catering to a wide range of runners. The..

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, scenic Kirtling Route, which is fully on road and mildly undulating, while the half marathon uses the Windmill Route, both featuring quiet roads. The..

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 Centurion North Downs Way 50® is a challenging 50-mile point-to-point ultramarathon held annually along the North Downs Way National Trail in South East England. Starting in Farnham, Surrey, and finishing at Knockholt Pound near Greater London, the course features approximately 5,600 feet of ele..

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, SG9 0RU. Returning for its second year, the event features a challenging 100-mile race completed over 32 hours across two days. The course consists of a 5.3 km loop combining trail, grassland, and some tarmac paths, suit..

The Summer Solstice Challenge in Colchester is a unique running event held at the scenic Abberton Reservoir Visitors Centre. Taking place on the longest day of the year, participants run laps of just over 5 kilometers on off-road paths around the reservoir. The event lasts six hours, from 3 pm to 9..

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..

The Maidenhead Trail Run, held on July 26, 2026, offers a scenic and relaxed running experience in Summerleaze Park, Maidenhead, UK. Participants can choose from 5K, 10K, and Half Marathon distances, all featuring flat, soft trail terrain ideal for runners of all levels. The course loops around peac..

The Henley River Half Marathon, 10K & Junior Race takes place on September 5, 2026, at Temple Island Meadows, Remenham Lane, Henley-on-Thames, UK. This event features a half marathon, a 10K, and a junior race, all set along a scenic route by the Thames. The course offers mixed, undulating terrain wi..