Trail Running calendar near Hertfordshire 2025-2026

We have found 374 Trailruns within 80 miles of Hertfordshire. See below where and when you can find the races.

The Ridgeway 40 Walk is a challenging 40-mile event held annually, traversing the historic Ridgeway path from Avebury in Wiltshire to Streatley in Berkshire, UK. Participants navigate a scenic route rich in history, including ancient earthworks and Neolithic sites. The event provides essential suppo..

London 100 is an ultramarathon event organized by Camino Ultra, designed to challenge runners and enhance their endurance skills. Participants will navigate through scenic trails in and around London, promoting both physical fitness and community engagement. The event aims to provide a supportive at..

The Bewl Water Spring event is a scenic running series held bi-annually at Bewl Water Country Park in Kent, featuring ultra marathon, marathon, half marathon, and 10km distances. Runners start from the Bewl Water Visitor Centre and navigate a picturesque route around the reservoir, combining undulat..

The Five Rivers Ultra is an ultra-endurance running event set 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, with over 85..

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, 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 Midhurst Milers Cocking 10k Trail Race is an exciting running event set against the scenic backdrop of the South Downs. Scheduled for May 11, 2025, participants will tackle a challenging yet beautiful course that includes a steady climb across the Cowdray Estate and stunning views from the top...

The LDWA South Downs Marathon is a challenging event set in the picturesque South Downs National Park, featuring two distance options: 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 Cuck..

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 Woodland Woggle 10k is a scenic trail race set in the picturesque surroundings of Hampton Estate and Puttenham Common. This one-lap course features undulating hills, stunning views, and beautiful bluebell woods, making it a favorite among trail runners. Participants aged 16 and over can enjoy ch..

The Shires and Spires Ultra Marathon is a scenic 54-mile race set in Northamptonshire, featuring a mix of approximately 70% trails and 30% roads. Starting and finishing at Naseby Village Hall, the event offers five distance options, including an ultra marathon, marathon, three-quarter marathon, half..

The Hankley Common 10km is a guided trail run set in the scenic Hankley Common, known for its rich wildlife and historical significance. Participants can enjoy a unique experience running through beautiful trails, with options for both sunset runs in warmer months and night runs during colder months..

The Hankley Common 10km is a guided trail running event set in the scenic Hankley Common, known for its rich wildlife and historical significance, including the Atlantic Wall replica used during WWII. This event is designed for runners of all levels, particularly those new to trail running or lookin..

The Dinton 5km & 10km Summer Series, hosted by Barnes Fitness, is a popular running event taking place at Dinton Pastures Country Park. Celebrating its 13th year, the series features races on the third Thursday of May, June, July, and the second Thursday in August. Participants can choose between 5k..

The Centurion North Downs Way 50 is a challenging 50-mile ultramarathon that takes place along the scenic North Downs Way National Trail, stretching from Farnham in Surrey to Knockholt Pound, near Greater London. With a total elevation gain of 5,600 feet, the course features a mix of trails and road..

The Run Rabbit Trail Festival is a multi-distance trail running event organized by Race Harborough, set in the scenic Deene Park Estate near Corby. Scheduled for May 17-18, 2025, the festival features various challenges, including the Trail Mix Challenge (25k), Headlight Hop (10k), and Thump Trail H..

The Maverick X Series North Downs 2025 is a thrilling trail running event set in the picturesque Surrey countryside, taking place at Cranleigh Showground. Participants can choose from four routes: Ultra (52 km), Long (43 km), Middle (22 km), and Short (11 km), each offering a unique blend of scenic..

UTMB Index

The Compton Marathon & 16 Mile Challenge, organized by the Compton Harriers Running Club, is a popular running event held in Compton, Berkshire. Participants can choose between a full marathon and a 16-mile challenge, both set against scenic backdrops. The event promotes community engagement and enc..

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 Guided Spring Marathon - Winchester will take place in Winchester on Sunday 18 May 2025. You can run 26 miles.