Trail Running calendar near Hertfordshire 2025-2026

We have found 378 Trailruns within 80 miles of Hertfordshire. See below where and when you can find the races.

Sussex Loops is a challenging outdoor event held at Forest Row Village Hall in East Sussex, featuring distances of 12, 18, 25, or 31 miles with up to 3,250 feet of ascent. Participants navigate three loops exploring the scenic Ashdown Forest and surrounding countryside: the South Loop (12 miles), We..

The Guided 10K Pub Run will take place in New Alresford on Sunday 3 August 2025. You can run 10 kilometers.

The Vanguard Way Marathon is a scenic running event held near Croydon, starting from East Croydon Station, just 20 minutes from central London. It offers both a full marathon (26.2 miles) and a half marathon (13.1 miles), following part of the Vanguard Way National Trail, a 66-mile route stretching..

The Harting Multi-Terrain '10' is a challenging 10-mile race held at the War Memorial Sports Ground in South Harting, West Sussex, within the scenic South Downs National Park. Organized by Liss Runners volunteers, the course features a mix of private lanes, gravel tracks, bridleways, and footpaths,..

The Ivybridge 3 Tops is a challenging fell running event held as part of the Dartmoor Fell Series in South West England, organized by Erme Valley Harriers. The race covers approximately 10 kilometers with 450 meters of climbing, offering stunning views over the South Hams. The course starts near the..

The MTC Cotswold Ultra is a challenging 57-mile point-to-point ultra marathon starting at Kemble Station and finishing at Travelodge Oxford Abingdon Road. The scenic route follows the Thames Path, passing through picturesque villages like Somerford Keynes, Cricklade, Castle Eaton, and Lechlade, feat..

The MTC Thames Challenge is a four-day ultra marathon covering 184 miles along England’s longest river path, the Thames. Starting from the river’s source in the Cotswolds, the race progresses through four stages: the Cotswold Ultra (57 miles), Oxford Ultra (49 miles), Windsor Ultra (47 miles), and R..

Run Sandringham 24 is a premier 24-hour trail running event held at the scenic Sandringham Estate, the Royal Family's country retreat in Norfolk, England. Participants can run solo or in teams of up to 12, completing laps of a 5-mile course through beautiful Royal Parkland and Norfolk countryside. T..

The MTC Oxford Ultra is a 49-mile ultra marathon starting from Travelodge Oxford Abingdon Road and finishing at The Catherine Wheel in Henley-on-Thames. The point-to-point course follows the Thames Path, passing scenic landmarks such as Sandford Weir, Culham, Cholsey, Moulsford, Streatley, Whitchurc..

The Thames Meander Summer is a scenic riverside running event held in Richmond, starting at the Petersham & Ham Sea Scouts HQ. It features three fast, flat, and well-marked out-and-back trail routes along the Thames Path: a 10km (one 6.25-mile lap), a half marathon (two 6.55-mile laps), and a marath..

The Centurion North Downs Way 100 is a challenging 103-mile continuous trail ultramarathon held in Southeast England, running from Farnham in Surrey Hills to Ashford in Kent. The course features approximately 11,000 feet of elevation gain, traversing scenic countryside, villages, and notable landmar..

The Stour Valley Path 100 (SVP100) is a prominent ultra running event in the UK, featuring a 100km (62-mile) race along the scenic Stour Valley Path from Newmarket, Suffolk to Cattawade near Manningtree, Essex. Known for its beautiful English countryside, the route passes through landscapes celebrat..

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The MTC Windsor Ultra is a challenging 47-mile ultra marathon held in the UK, starting in Henley-on-Thames and finishing in Kingston upon Thames. The point-to-point course follows the River Thames, passing landmarks such as Marlow Lock, Cookham Moor, Windsor Castle, and Runnymede, offering scenic ri..

The Mount Ephraim 10K is a popular running event set in the picturesque Mount Ephraim Gardens in Kent. This annual race features a scenic 10K course along quiet country lanes, attracting both seasoned club runners and casual participants. In addition to the main race, there is a Junior Run, allowing..

The Henfield Half Marathon is an off-road running event held at Henfield Leisure Centre in Henfield, UK. The scenic half marathon course features trails along a riverbank and a disused railway, incorporating flint paths and stiles, offering a unique and picturesque running experience. The event welc..

The Cold Norton Charity Summer Half Marathon Trail Event, scheduled for August 10, 2025, offers participants a choice between a 10km and a 13.1-mile route through the scenic countryside of Cold Norton, Essex. This charity event supports Farleigh Hospice, providing essential care for those with life-..

The Ramsbury Gold 10k is a scenic trail running event held at the Ramsbury Brewery on the Ramsbury Estate in Wiltshire. The 10km course features approximately 70% off-road terrain, including local trails, woodland, and footpaths, with an elevation gain of 165 meters. Suitable for all abilities, the..

Hart 4 is a unique 4-hour trail relay held at Minley Manor, Hampshire, where teams of four compete on a 4 km off-road course. The event features an undulating route through woods and grasslands, combining hills and flat sections to challenge and engage runners. Teams aim to complete as many laps as..

The Huffer Puffer Trail Race is a self-navigated trail running event held near Littley Green, Chelmsford. Covering approximately 6 miles, the course traverses trails, tracks, and country lanes. Participants receive a written route description on race day, as the course is unmarked and without marsha..

The Foxton Hound Ultra, held near Market Harborough, offers two challenging trail races of 100k and 50k distances through the scenic countryside of Northamptonshire and Leicestershire. The routes follow the Harborough Round long-distance footpath, passing through historic villages like Houghton on t..