Trail Running calendar near Chelmsford 2024-2025

We have found 287 Trailruns within 80 miles of Chelmsford. See below where and when you can find the races.

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..

The Cock-a-doodle Dawdle is a running event returning for its second year at the scenic Hyde Hall Farm in Hertfordshire. Participants can choose from various distances, including 10k, Half Marathon, Full Marathon, and Ultra Marathon, making it suitable for runners of all levels. The event features a..

July 2025

The Devil's Punchbowl 10k is a guided trail running event set in the scenic Devil's Punchbowl, Surrey. This 10km run is designed for participants of all skill levels, offering a fun yet challenging experience along beautiful trails and hills. Runners can enjoy breathtaking views while being guided b..

The Full Essex Way Ultra is an 82-mile ultra-marathon that takes participants from Epping tube station in London to the historic port of Harwich. Scheduled for July 4-5, 2025, the event features a mixed terrain of trails, footpaths, tracks, and roads, with a total elevation gain of 3,469 feet. Runne..

UTMB Index

The Serpent Trail is a scenic trail running event set in the stunning South Downs National Park, featuring a variety of distances including 100km, 75km, 50km, 20km, and 10km. Participants can enjoy breathtaking landscapes, including rare habitats and ancient woodlands. The event includes coach trans..

UTMB Index

The ATW Odyssey 12 is an exciting running event that takes place in St Neots, offering participants a unique journey of self-discovery through scenic multi-terrain paths. This event encourages both physical and psychological challenges, allowing individuals to compete solo, in pairs, or as teams of ..

The Chiltern Ridge Half Marathon is a challenging trail running event set along The Ridgeway National Trail in Buckinghamshire. Scheduled for July 6, 2025, this race covers a distance of 21.2 km with an elevation gain of 526 meters, starting and finishing in Wendover. Participants will navigate a sc..

UTMB Index

Fen Gallop 2025 is a running event taking place in Willingham, Cambridgeshire, featuring a 10km race and a shorter 4-mile option along scenic flat country roads, footpaths, and bridleways. The event also includes a kids' run organized by the Willingham School Association. Registration opens early in..

The Bewl 15 Mile & 5 Mile event, organized by Wadhurst Runners, takes place around the scenic Bewl Water in Sussex. Participants can choose between a challenging 15-mile or a 5-mile race, both designed to showcase the area's stunning landscapes. The event not only promotes community spirit but also ..

The Highwayman Trail Marathon is a unique narrative trail race set for July 6, 2025, in the picturesque villages of Thaxted, Great Sampford, and Hempstead, linked to the early life of Dick Turpin. The course is predominantly off-road, covering diverse terrains, and participants will navigate using w..

The Bishop's Stortford Mitre 10k, 5k, and 1K is a community-focused running event organized by The Bishop's Stortford High School, taking place on July 6, 2025. The event features professionally measured 10k and 5k routes through scenic East Hertfordshire villages, designed for runners of all ages a..

St Martha's 10km is a scenic guided trail run set in the beautiful Surrey Hills, starting near Guildford. Participants will experience a rewarding climb up St Martha's Hill, offering panoramic views from the hilltop church, before continuing to Newlands Corner and descending through the picturesque ..

Race to the Stones is the UK's largest ultramarathon, taking place along Britain’s oldest footpath, the Ridgeway. Participants can choose to complete a 100km route either non-stop or over two days, with options for 50km segments on each day. The event starts in Lewknor and finishes at the historic A..

UTMB Index

The North Downs 50 Ultra Challenge is an exciting endurance event taking place on July 12, 2025, in the picturesque Surrey Hills, starting from Guildford basecamp. Participants can choose from three distances: a challenging 50 km loop, a 25 km route, or a 10 km option, all set against stunning natur..

The Ultra:5K event returns on July 13, 2025, at Box End Park in Kempston, Bedford, marking its ninth edition. This unique running challenge offers two options: the Ultra:5K FIVE, consisting of five 5K races over five hours, and the Ultra:5K THREE, featuring three 5K races over three hours. Participa..

The Hughenden Manor 10K is a popular trail running event set in the scenic Hughenden Valley, near High Wycombe. This challenging race features a hilly course that combines woodland and rural trails, making it suitable for runners of all fitness levels. Participants can expect a well-marked route wit..

The Hughenden Manor Half Marathon is a scenic trail running event set in the picturesque Hughenden Valley, featuring a challenging 21.1 km course that winds through the woodlands surrounding the National Trust's Hughenden Manor. Participants can expect a mix of hilly terrain and beautiful views, mak..

UTMB Index

The Boudicca Way 50km Ultra is a beginner-friendly ultramarathon taking place in Norfolk, following the scenic Boudicca Way from Diss to Norwich. Scheduled for July 19, 2025, this event welcomes both runners and walkers, with a time limit of 10 hours to complete the course. The route traverses pictu..

The Humanity Direct Chiltern Challenge is a one-day endurance running event set in the picturesque Chiltern Hills, offering distances of 10 km, 25 km, and 50 km. Participants can run for free by committing to raise funds for Humanity Direct, which supports life-changing medical operations for childr..

The Maverick X Series Chilterns 2025 is a trail running event set in the picturesque Stonor Park, featuring four distinct routes: Ultra (52 km), Long (42 km), Middle (22 km), and Short (12 km). Participants will navigate through the stunning Chilterns Area of Outstanding Natural Beauty, encountering..

UTMB Index