Trail Running calendar near Chelmsford 2025-2026

The Run the Wild Half Marathon - Spring Edition is a 13-mile (21.1 km) trail running event set in the scenic Chiltern Hills, just 40 minutes northwest of London near Tring. Featuring rolling chalk hills and woodland paths with around 300m of ascent, the course offers a welcoming atmosphere for all a..

The Springtide 50k is an ultra running event held in the historic town of Arundel, West Sussex. This single-loop course offers a runnable, non-technical route through the scenic South Downs, making it ideal for beginners and experienced runners alike. Participants enjoy stunning views of rolling hil..

The Zig Zag Challenge is a timed running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants can choose between a 4-hour or 6-hour race, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass areas. The event suits..

The Mortimer 10km is a scenic trail running event held in the charming Berkshire village of Mortimer, starting and finishing at Mortimer Fairground. The race features a beautiful two-lap, multi-terrain course that covers woodland trails, footpaths, and bridleways with an elevation gain of 85 meters...

The Henley River Half Marathon, 10k & Junior Race takes place in April 2026 at Temple Island Meadows, Henley-on-Thames, UK. This scenic event features a mixed-terrain, undulating course along the Thames, starting and finishing at the iconic Royal Henley Rowing Regatta launch point. The half marathon..

The Rosebud Marathon is a scenic 26.2-mile race held in Northamptonshire, England, featuring a mix of approximately 60% trails and 40% roads. Starting at Hartwell and finishing at Brixworth Country Park near Northampton, the course traverses beautiful countryside, including canal towpaths and 14 vil..

The Rose of the Shires Ultra is a scenic 54-mile circular ultra marathon held in Northamptonshire, starting and finishing at Brixworth Country Park. The course features approximately 72% trails, including country paths, towpaths, and forest tracks, with the remaining 28% on roads. Runners traverse b..

The 50 Mile Grand Slam is a challenging endurance event organized by Centurion Running, comprising four separate 50-mile races held throughout 2026 in the UK. Participants complete the South Downs Way 50, North Downs Way 50, Chiltern Wonderland 50, and Wendover Woods 50. The event covers diverse sce..

Run The Seasons at Cowdray is a scenic trail running event held on the Cowdray Estate in West Sussex, within the South Downs National Park. The 2026 Spring edition features courses of 5km, 10km, 10 miles, and dog-friendly canicross options. The route traverses Ambersham and Heyshott Commons, designa..

The Centurion South Downs Way 50® is a challenging 50-mile foot race held annually along the South Downs Way National Trail in Southern England. Starting in Worthing and finishing with a lap at Eastbourne Sports Club Athletics Track, the course features approximately 5,700 feet of elevation gain ove..

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 Battle of the Brampton Valley Way is a unique ultra running event held in Leicestershire and Northamptonshire, featuring a 28-mile (45km) out-and-back course along the flat, traffic-free Brampton Valley Way. Runners choose to start from either Market Harborough or Northampton, representing their..

The Nene Valley Races - Kings Cliffe 10K is a friendly and scenic trail running event held in the beautiful Nene Valley countryside, starting and finishing at KC Active in Kings Cliffe, Northamptonshire. The circular 10K course features easy tracks, green fields, farm paths, and disused railway line..

The Windsor 50 Ultra Challenge is a premier UK trail running and trekking event held at Windsor Racecourse. Participants can choose from 50 km, 25 km, or 10 km looped routes that showcase scenic views of Windsor Castle, the Great Park, Runnymede, and the Thames Path. The 50 km course features two di..

The Spring Trail Series by Ultra X is a trail running event held at the Cowdray Estate in Surrey, within the scenic South Downs National Park. The series features five race distances: 12km, 25km, 50km, 50 miles, and 110km, all starting and finishing at the same accessible location near Cowdray Farm..

The Chiltern Ridge Classic 50K is an iconic ultra marathon held in the Chiltern Hills, UK, featuring a challenging 51 km trail run with 996m of elevation gain. The race starts at historic Berkhamsted Castle and finishes at Hampden Meadow in Wendover, traversing scenic ridgeline trails including Ashr..

The Thames Ring 250 is a challenging 250-mile (approximately 256 miles) trail ultramarathon starting and finishing in Streatley-on-Thames, UK. The race follows an anti-clockwise loop along the Thames, the Grand Union Canal, and the Oxford Canal, primarily on flat canal and riverside paths. Despite t..

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 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 point-to-point trail race held annually in England, running from Richmond in South West London to Oxford city center, finishing on the grounds of Oxford University. The course follows the scenic Thames Path mostly on flat, fast, and well-groomed trails and..