Trail Running calendar near Hertfordshire 2025-2026

The Kennet & Avon Canal 145 Mile Race (KACR) is a challenging non-stop ultramarathon held in the UK, running from Little Venice, London, to Bristol. Covering 145 miles, the route follows canal, river, and railway towpaths, including the Grand Union Canal, Jubilee River, River Thames, Kennet & Avon C..

The Maverick X Series East Sussex 2025 is a trail running event held at Stanmer Park, near Brighton, East Sussex. It offers five routes ranging from a 6 km sprint to a challenging 50 km ultra, all featuring hilly, hard-packed trails suitable for all levels. The course includes scenic sections of the..

The ZigZag Great Barrow Challenge Day 3 takes place at the Suffolk Running Centre in Bury St Edmunds, IP29 5AX. This event is part of a 10-day running series offering individual day entries with distances ranging from 5k to ultra marathon. On Day 3, runners can choose between the full Kirtling route..

The ZigZag Great Barrow Challenge Day 4 takes place at the Suffolk Running Centre in Bury St Edmunds, IP29 5AX. This event is part of a 10-day series offering individual day entries with distances ranging from 5k to ultra marathon, allowing participants to choose their race and pace. Day 4 features..

The White Horse Gallop is a circular half marathon trail running event that begins and ends on the Ridgeway, showcasing the scenic beauty of National Trust sites, including Ashdown House and the historic White Horse Hill. The course features an "undulating" route, providing a challenging yet enjoyab..

The Westfield 7.5km Trail Race is a scenic trail running event held at Westfield Community Hall in the UK. The course features a mainly off-road loop that follows the renowned 1066 Country Walk for the first 3km, passing landmarks such as the Bayeux Tapestry-inspired Farbanks Henge sculptures. Runne..

The 3 Brewers 10km is a scenic trail run held at the 3 Brewers Brewery, nestled in the Hertfordshire countryside near Hatfield. This multi-terrain course covers 10 kilometers with about 70% off-road paths, including local trails, woodland, nature reserves, and country lanes, featuring an elevation g..

The Great Barrow Challenge Day 5, hosted by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds. This event is part of a 10-day running challenge offering various distances including 5k, 10k, half marathon, full marathon, and ultra marathon, allowing participants to choose..

The Trifarm Summer Trail 10k is a scenic off-road running event held at Trifarm, Boreham, Chelmsford, Essex. This race is part of a seasonal trail series and features a mostly off-road course (over 95%) on public footpaths and bridleways. The route is an anti-clockwise loop starting near a humpback..

The Great Barrow Challenge Day 6, hosted by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds. This event is part of a 10-day running challenge offering various distances including 5k, 10k, half marathon, full marathon, and ultra marathon, allowing participants to choose..

Ashtead Park Summer Series 2025 is the final event in a four-part summer evening orienteering series organized by MVOC, held in Ashtead, Surrey. The event offers two course options: a 60-minute score course for experienced participants, where runners choose which controls to visit within an hour, an..

The Zigzag Great Barrow Challenge Day 6 takes place at the Suffolk Running Centre in Bury St Edmunds, featuring the Golding Hills route. This trail event offers multiple distance options including 10k, half marathon, full marathon, and ultra marathon, catering to various fitness levels. The course i..

The Great Barrow Challenge Day 7, hosted by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds, IP29 5AX. This event is part of a 10-day series offering individual day entries with multiple distance options including 5k, 10k, half marathon, full marathon, and ultra maratho..

The Great Barrow Challenge Day 8, hosted by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds. This event is part of a 10-day series offering various distances including 5k, 10k, half marathon, full marathon, and ultra marathon, allowing participants to choose their own p..

The Great Barrow Challenge Day 9, hosted by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds, IP29 5AX. This event is part of a 10-day series offering individual day entries with multiple distance options including 5k, 10k, half marathon, full marathon, and ultra maratho..

The Wendover Woods 10k, part of the "Race The Light" event, is a trail running race held at Wendover Woods, HP22 5NQ. The race features a challenging 10km course with over 250 meters of elevation gain, fully marked and marshalled on smooth woodland trails with a mix of hills and descents. There is a..

The Round the Rock will take place in Morden on Saturday 2 August 2025. You can run 46 miles.

The Orion Harriers Forest Five Series is a running event held at Jubilee Retreat, featuring a 5-mile race through forest terrain. Established in 2009 to support the Orion Harriers clubhouse, the 2025 series includes three races on Saturday mornings in June, July, and August. The third race also serv..

The ZigZag Great Barrow Challenge Day 10 is a trail running event held at the Suffolk Running Centre in Bury St Edmunds, IP29 5AX. This event offers individual day entries with multiple distance options including 5k, 10k, half marathon, full marathon, and ultra marathon, allowing participants to cho..

The Garendon Gallop 10K is a well-organized trail running event held at Charnwood College in Loughborough, Leicestershire. The race features a challenging 10K course with undulating terrain, passing historical landmarks and offering a scenic experience. The event is chip-timed and fully marshalled,..