Trail Running calendar near Chipping Ongar 2025-2026

The Spring Trail Series by Ultra X is a trail running event held in the South Downs National Park, starting from Midhurst, Surrey. It features five race distances: 12km, 25km, 50km, 50 miles, and 110km, all set along the scenic Serpent Trail that passes through greensand hills, rivers, woodlands, an..

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 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 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 Ale Trail is a 15-mile fun run held in Alfriston, East Sussex, starting from the beer garden of Ye Olde Smugglers Inne. The event features a scenic course with two checkpoint pubs—the Hampden Arms and The Ram Inn—where runners can enjoy a beer and snacks before continuing. Participants are encou..

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..

Rapid Relays is a dynamic solo and team relay race held at the scenic Culden Faw Estate in Fawley, near Henley on Thames, Oxfordshire. The woodland trail course features estate tracks with gently undulating terrain, including a notable climb just before the 3K mark, followed by a long downhill stret..

The Three Forts Challenge is a renowned trail running event held in West Sussex, starting and finishing at Lancing Manor Leisure Centre. It offers three race options: a full marathon (27.2 miles), a half marathon, and a 5-mile trail run. The courses feature demanding terrain with steep climbs, stile..

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 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 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..

Shires and Spires is a celebrated multi-terrain running event held in Northamptonshire, starting and finishing at historic Naseby Village Hall. Known for its scenic routes through countryside and past landmarks like Holdenby House and Althorp House, the race offers five distances: 10K, half marathon..

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 Centurion North Downs Way 50® is a challenging 50-mile point-to-point trail race along the North Downs Way National Trail, starting in Farnham, Surrey, and finishing at Knockholt Pound near Greater London. The course features a total climb of 5,600 feet and passes through scenic locations includ..

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..

The Henley River Half Marathon, 10k & Junior Race takes place at Temple Island Meadows, Remenham Lane, Henley-on-Thames, UK. Scheduled for September 5, 2026, this event features a half marathon, 10k, and a junior race, all set on mixed, undulating terrain with scenic views alongside the Thames. The..