Trail Running calendar near Harwich 2025-2026

We have found 154 Trailruns within 80 miles of Harwich. See below where and when you can find the races.

The Active Fakenham Town Centre 5k is a vibrant running event that takes place as part of the Easter Sunday Funday festivities in Fakenham. Open to runners and walkers of all ages and abilities, the event features lap races through the town center. Participants will receive a medal, and children wil..

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..

The Viper 5 Mile Trail Run (Spring edition) is an exciting running event scheduled for April 24, 2025. This self-sufficient race is open to participants over 18, with a limited capacity on a first-come, first-served basis. Runners are encouraged to bring their own water and provisions, as well as ap..

Zigzag - The 'Other' Run is a unique 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 Suffolk Running Centre in Bury St Edmunds, the event features scenic, officially measured routes. Ru..

May 2025

The Centurion Thames Path 100 is a prestigious 100-mile trail race that takes place along the scenic Thames Path, stretching from Richmond in London to Oxford. This event, held annually, features a flat and fast course with a total elevation gain of 1,900 feet. Participants must complete the race wi..

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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 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 Heritage Coast Run is an exciting running event scheduled for May 4, 2025, featuring a mainly off-road course that includes both a 10k and a half marathon option. Participants can also join a special 10k dog run, promoting a fun and inclusive atmosphere for runners and their canine companions. T..

The London 100 is an exciting 100KM running event set in Central London, organized by Camino Ultra. Participants will tackle four 25KM legs, exploring the city while passing over 100 iconic landmarks. The event is designed to cater to both first-time runners and experienced athletes, making it an in..

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 Bewl Water Spring event is a scenic running series held at Bewl Water Country Park in Kent, featuring ultra marathon, marathon, half marathon, and 10km distances. The courses showcase a mix of undulating rural trails and quiet country lanes, offering stunning views of the largest lake in South E..

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 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. Known for its welco..

The Reigate Priory Park 10K Charity Fun Run is an exciting event set in the beautiful surroundings of Reigate Park, offering a challenging yet enjoyable experience for runners of all levels. Participants can expect a gently undulating course amidst lush greenery, promoting both physical achievement ..

The 10Bay Challenge is a unique running event set on the picturesque beaches of Thanet in Kent, taking place on May 18, 2025. Participants can choose between two distances: the full 10Bay Challenge, approximately 15 miles, or the shorter 4Bay 10k. The race occurs at low tide, allowing runners to nav..

The Richmond Park Marathon is a scenic 26.2-mile running event held in Richmond Park, featuring a challenging course that consists of three laps. The first lap is 12 miles, while the subsequent two laps follow the Tamsin trail, each measuring 7.1 miles. The race starts and finishes near Sheen Gate, ..

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 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..

The Grand Union Canal 145 Mile Race (GUCR) is a prestigious ultra-running event taking place along the Grand Union Canal Towpath from Gas Street Basin in Birmingham to Little Venice in London. Scheduled for May 24, 2025, this non-stop race welcomes participants aged 20 and over, with no prior qualif..

The London 2 Brighton Ultra Challenge is a premier endurance event that invites participants to traverse a scenic 100 km route from Richmond-Upon-Thames to Brighton. Scheduled for May 2025, the challenge accommodates various distances, including quarter, half, marathon, and full options, ensuring in..