Trail Running calendar near Hemel Hempstead 2025-2026

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 6-hour or 4-hour challenge, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass areas. The event..

The Testway Ultra is a challenging ultra marathon held in Hampshire, England, featuring 40 and 50-mile distances along the scenic Testway footpath. The route stretches from the chalky downs near the Northern Hampshire/Berkshire border to the southern town of Totton in Southampton, showcasing picture..

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...

Henley River Half Marathon, 10K & Junior Race, organized by RunThrough UK, takes place at Temple Island Meadows, Remenham Lane, Henley-on-Thames. The event offers three distances—the Half Marathon, 10K, and a Junior Race—on a scenic, mixed-terrain course along the River Thames. The route is undulati..

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 54-mile circular ultra marathon held in Northamptonshire, starting and finishing at Brixworth Country Park. The course features approximately 70% trails, including country paths, towpaths, and forest tracks, with the remaining 30% on roads. Runners traverse scenic c..

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 ultramarathon held annually in Southern England, starting in Worthing and finishing at Eastbourne Sports Club Athletics Track. The course follows the South Downs Way National Trail, featuring 5,700 feet of elevation gain over 85% trail and 1..

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 miler, and 110km, all set along the picturesque Serpent Trail that traverses greensand hills, r..

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 Drop - Winchester is a unique and challenging race held in Winchester, UK, offering participants a choice between 10-mile and 15-mile distances, either solo or in teams. Inspired by military-style navigation, the event requires runners to find their way back to the event center from an undisclos..

The A Coventry Way Challenge is a 40-mile running or walking event set in the scenic countryside around Coventry, starting and finishing at the Heart of England Social Club in Meriden. Open to individuals aged 18 and over, participants can take part solo or in relay teams. The course features five c..