Trail Running Calendar East of England 2024-2025

The Thames Ring 250 is an iconic 250+ mile ultramarathon that takes participants on a challenging loop from Goring along the River Thames into London, up the Grand Union Canal, and back down the Oxford Canal. First held in 2009, this race features a high difficulty level, with a DNF rate exceeding 5..

Zigzag's "The Other Run" is a running event scheduled for the same day as the London Marathon, offering participants a choice of distances: 5k, 10k, half marathon, or full marathon. Set at the scenic Suffolk Running Centre, the event features a mass start and a seven-hour cut-off time. Runners can e..

The Weavers' Way 50km/50mile Ultras is a beginner-friendly ultramarathon event taking place in Norfolk on May 3, 2025. Participants can choose between a 50km route from Stalham to Cromer or a more challenging 50-mile route from Acle to Cromer. The scenic courses follow the Weavers’ Way along the Riv..

The Heritage Coast Run is a community-focused running event organized by a non-profit volunteer organization. It features a scenic 10k and half marathon route, primarily off-road, allowing participants to enjoy the beautiful coastal landscape. The event has a rich history, having been established in..

The Two Castles Trails is a unique trail running event featuring narrative races that guide participants through a circular route around the villages near Hedingham and Clare Castles. The marathon and half marathon routes are predominantly off-road, covering diverse terrains. Runners must follow wri..

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 Halstead & Essex Marathon is set to return in May 2025 for its 29th edition, having been established in 1995. This popular event, organized by Halstead Road Runners, attracts participants from across the UK and beyond, taking place on scenic, low-traffic roads in North Essex. The marathon is par..

The Zig Zag Marathon and Half Marathon takes place at the Suffolk Running Centre in Bury St Edmunds, featuring a scenic, officially measured route. Participants can choose between a full marathon and a half marathon, both designed for a mass start. The event includes a seven-hour cut-off time and of..

The Run Banham Zoo (5k) is an exciting running event set in the scenic grounds of Banham Zoo. Participants will enjoy a unique experience as they run past various animal exhibits, including kangaroos, giraffes, and lemurs. The race is open to runners of all abilities, with two waves available for en..

Zig Zag Farmmageddon is an exciting 100-mile running event taking place over two days at Hyde Hall Farm, Buntingford. Participants will tackle a 5.3k loop course within a 32-hour time frame, making it accessible for runners of all abilities. Each participant completing the 100-mile distance will rec..

The Angles Way Ultra is a long-distance trail running event taking place on May 25, 2025, along the scenic Waveney River valley, spanning the Norfolk/Suffolk border. Participants can choose between a 100k ultra starting in Diss and a 50k ultra from Shipmeadow, both concluding in Great Yarmouth. The ..

The Ridgeway Challenge is an 86-mile (139 km) point-to-point trail running race that traverses the entire length of The Ridgeway National Trail, from Ivinghoe Beacon in Hertfordshire to the Avebury Stones in Wiltshire. This historic route has been in use for over 5,000 years. Scheduled for May 31, 2..

The Circuit du Sore Legs is an annual running event taking place at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Participants can choose from various distances, including 5k, 10k, half marathon, full marathon, and a 50k ultra, all run on a 400-meter athletics track. The event featur..

The Suffolk Back Yard Ultra is a highly competitive running event held at High Lodge Thetford Forest in Suffolk. Participants run a distance of 4.167 miles every hour on the hour, continuing until only one runner remains who can complete the loop within the one-hour time limit. The event features ch..

The Sundowner Marathon is a unique running event that takes place over a summer evening, allowing participants to experience a scenic route that includes canals, waterfalls, vineyards, woodlands, and coastal saltmarshes. Scheduled for June 7-8, 2025, this marathon offers a captivating atmosphere as ..

The Valley of the Owls Run, hosted by Zig Zag Running, takes place in the picturesque village of Ousden, Suffolk, known for its historic roads and beautiful countryside. Participants can choose from various distances, including 5k, 10k, Half Marathon, Full Marathon, and Ultra, with a focus on a soci..

The Tewinbury Trail 10K is an exciting trail running event set in the picturesque Tewinbury Farm & Hotel, located just north of Welwyn in Hertfordshire. Scheduled for June 8, 2025, this race features a scenic 10K route that meanders through a variety of terrains, including forest paths and open trac..

The Dunstable Downs Half Marathon is a scenic trail running event set in the picturesque National Trust's Dunstable Downs estate. Scheduled for June 22, 2025, this challenging race features an entirely off-road route that spans 21.2 kilometers with an elevation gain of over 450 meters. Participants ..

The Chelmsford Brew Co Summer 10k Trail Run is a fun, non-competitive event scheduled for June 26, 2025. Participants will navigate a GPX/Strava route, with a checkpoint at the brewery where they can enjoy a drink and relax for up to 20 minutes. Entry includes a beverage at the brewery checkpoint an..

The Colworth Marathon Challenge is a unique running event held in the scenic Colworth Estate, North Bedfordshire, UK. Participants can choose to enter one, two, or all three races, which together total 26.2 miles. The event features a multi-terrain 5-mile race, an 8.1-mile cross-country trail, and a..