Trail Running calendar near Chelmsford 2025-2026

The Phoenix Striders Summer Series is a running event held at the Langdon Discovery Nature Park, featuring five rounds throughout the summer. Participants aged 12 and older can enjoy a 5k trail run, consisting of two laps of a 2.5k circuit. The series aims to raise funds for the Essex Wildlife Trust..

Saturn Running's Midweek Chasing Numbers event in Egham offers a flexible and inclusive running experience for participants of all abilities. Set along a scenic stretch of the River Thames, runners can choose their distance within a 7-hour time challenge, with options ranging from a minimum of 5km t..

The Mid Sussex Marathon Weekend is a vibrant three-day running event taking place in May 2025, featuring races in East Grinstead, Haywards Heath, and Burgess Hill. Participants can choose from a variety of challenges, including a 10-mile race, a 10k, and a family-friendly Fun Run, with the option to..

The Mapledurham Backyard Ultra is a thrilling last-man-standing running event scheduled for May 3, 2025, at Mapledurham House in Reading. This endurance challenge features a 4.167-mile loop through Chazey Woods, where participants must complete laps on the hour, every hour, until only one runner rem..

The Centurion Thames Path 100 is a prestigious 100-mile trail race that takes place along the scenic Thames Path, stretching from Richmond in South West London to Oxford. This event, held annually, features a flat and fast course with a total elevation gain of 1900 feet. Participants must complete t..

The Two Castles Trails is a unique trail running event featuring narrative races that guide participants through a circular route around Hedingham and Clare Castles. The marathon and half marathon routes are predominantly off-road, covering diverse terrains, and require runners to follow written ins..

The Three Forts Challenge is a trail running event held in West Sussex, starting and finishing at Lancing Manor Leisure Centre. It offers three race options: a full marathon of approximately 27.2 miles featuring tough terrain with steep climbs and rough tracks, passing landmarks like Chanctonbury an..

The Heritage Coast Run is a mainly off-road running event held in Thorpeness, Suffolk, featuring a 10k and a half marathon course. Scheduled for May 4, 2025, the event offers a scenic route with sandy trails and coastal undulations. Both distances share the same course until the 10k turnaround near..

The 2025 Rapid Relays take place on May 4th at the scenic Culden Faw Estate in Fawley, near Henley on Thames, Oxfordshire. This woodland trail event features a course of estate tracks with gently undulating terrain, including a notable climb before 3 kilometers and a long downhill stretch back to th..

The Silent Pool 10km is a guided trail running event held near Guildford, starting and ending at the historic Silent Pool. The route features scenic trails along the North Downs Way, through forests like Netley Heath, and passes the picturesque village of Shere, known for film locations from 'The Ho..

The Galleywood Gallop is a UK Athletics permitted trail race held in Chelmsford, Essex, organized by Essex Trail Events. Scheduled for May 7, 2025, the event features an approximately 5-mile self-navigation course described in writing and issued on race day. The route is a twisting trail with no riv..

London 100 is an ultramarathon event organized by Camino Ultra, designed to challenge runners and enhance their endurance skills. Participants will have the opportunity to explore new trails while pushing their limits in a supportive community atmosphere. The event emphasizes personal growth and per..

The Five Rivers Ultra is an ultra-endurance running event taking place along the scenic North Essex and South Suffolk coastline. Participants can choose from three distances: 100 miles, 50 miles, and 50 km, catering to walkers, joggers, and runners. The course features a relatively flat terrain, wit..

The Brighton Backyard Ultra is an endurance running event held in Stanmer Park, Brighton, East Sussex. Participants must complete a 4-mile lap every hour until only one runner remains. This unique format encourages runners to push their limits, with no minimum distance required, making it accessible..

The Bewl Water Spring event is a scenic bi-annual running series held at Bewl Water Country Park in Lamberhurst, Kent. Participants can choose from four race distances: 10km, half marathon, marathon, and ultra marathon, all set against the backdrop of picturesque views around the largest lake in Sou..

The Run to the Sea Brighton Ultramarathon is a scenic 50km point-to-point race from Horsham to Brighton seafront, featuring diverse terrain including trails, rolling downs, and coastal promenade. Organized by UltraViolet Ltd, the event offers a well-structured course with full signage, GPS routes, a..

The Shires and Spires Marathon will take place in Naseby on Sunday 11 May 2025. You can run between 10 and 35 miles.

The Zig Zag Marathon and Half Marathon takes place at the Suffolk Running Centre in Bury St Edmunds, featuring a scenic and officially measured route. Participants can choose between a full marathon and a half marathon, both designed for runners seeking a Good For Age (GFA) qualification. The event..

The Taxus Baccata Trahentium is a trail running event organized by Essex Trail Events, taking place near Bishop's Stortford at The Yew Tree pub in Manuden. Scheduled for May 11, 2025, the race covers approximately 7 miles through the wild west of Essex county on a new route. It is a self-navigation..

The LDWA South Downs Marathon is a challenging event set in the picturesque South Downs National Park, featuring two distances: 28 miles and 18 miles. Participants will experience over 4000 feet of ascent on the longer route, traversing stunning landscapes including the Seven Sisters and Cuckmere Ha..