Trail Running calendar near Sunbury-on-Thames 2025-2026

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half marathon with 3.5 laps. The event features a supportive atmos..

The Winter Woolly 10km is a popular trail running event held annually on December 24th at Elstree School in Upper Woolhampton, Berkshire. Now in its sixth edition, the race features a scenic multi-terrain course covering 10 kilometers with 80% off-road paths, including lanes, footpaths, trails, wood..

The Plain Crazy Winter is a challenging 12.5-mile trail run held in Warminster, known for its hilly, cold, and scenic course that can be windy, snowy, and desolate. The event supports The Royal British Legion Poppy Appeal and offers prizes for top male and female finishers across various age categor..

The Knacker Cracker is a challenging 10K trail race held annually at Box Hill, Surrey, starting from Denbies Vineyard near Dorking, UK. Known as "Britain's toughest 10k," the course features a demanding route with 473m of ascent and 335m of descent over rough, steep, and often slippery terrain. The..

The East Hanningfield Trail Marathon is a challenging off-road race held around the village of Danbury, starting and finishing at East Hanningfield Village Hall. The 26.2-mile circular course is approximately 95% off-road, featuring diverse terrain and navigated using written instructions rather tha..

Dark Skies Surrey Hills is an exhilarating night trail running event set in the picturesque Surrey Hills, featuring races of 10 miles, 10K, 5K, as well as Canix and children's races for ages 3-11. Participants navigate through enchanting woodlands under the stars, illuminated by headlamps, making fo..

The Fitstuff G3 Series No.1 is a trail running event held at Newlands Corner, Drove Road, Guildford, Surrey. Participants can choose between two distances: 10km and 15km. The event offers a scenic course starting from Newlands Corner, with parking available nearby.Runners can also opt for bundled en..

The North Downs Way Ultra Run is a 30-mile trail run starting and finishing at St Martha's Hill in Guildford, Surrey. It showcases some of the best sections of the North Downs Way and surrounding Surrey Hills, including the famous Box Hill and Denbies Wine Estate. Designed as an ideal introduction t..

The Country to Capital Ultra Marathon is a renowned 43-mile point-to-point race starting at the Shoulder of Mutton Pub in Wendover and finishing near Little Venice Canal Basin in London. Serving as the official opener to the ultra running season, it attracts a global field of elite and amateur runne..

The Northampton 10K is a well-organized running event held at Northampton Racecourse Park, featuring a 2.2 km start followed by three laps around the racecourse. The course is accurately measured and takes place on pathway terrain, offering water stations and first aid support. Participants receive..

The Hankley Common 10km is a guided trail run located at Hankley Common Lower Car Park in Elstead, Surrey. This scenic 10km route offers runners the chance to explore beautiful trails rich in wildlife and historical interest, including the Atlantic Wall replica used for D-Day training. The course fe..

The Windmill Way Wander, organized by Zig Zag Running, is a versatile road running event held at the Suffolk Running Centre in Bury St Edmunds, UK. Participants can choose from multiple distances including 5k, 10k, half marathon, full marathon, and ultra marathon, all following the scenic Windmill W..

The South Downs & Arundel Winter Trails is a trail running event held in the scenic South Downs area near Arundel. It offers challenging courses on rural, often single-track trails that traverse farmland and natural landscapes. Participants can choose between a 15-mile route and a full marathon dist..

The Crocodile Challenge is a 6-hour running event held at Ryton Pools Country Park near Coventry in Warwickshire. The course is a runnable, relatively flat 3.3-mile loop around pools and open pasture with crushed stone paths and some minor rises. Participants can complete as many laps as they wish w..

The Stonehenge Stomp is a popular walking and running event organized by the City of Salisbury Athletics & Running Club, held near the iconic Stonehenge site. Participants can choose from fully marked trail distances of 5 km (family-friendly), 10 km, 20 km, 30 km, or 40 km, all offering scenic views..

The Ashdown Forest 10 & 5 Mile Series is an eco-friendly trail running event held at Pippingford Park Manor in East Sussex. Featuring two distances—10 miles and 5 miles—the races take runners through stunning park and forest trails with picturesque, undulating terrain. This sustainable event emphasi..

The Moors Valley Wildwood Trail Series Half Marathon & 10K is a trail running event held at Moors Valley Country Park & Forest in Dorset. Scheduled for January 25, 2026, it offers two distances: a half marathon consisting of two laps and a 10K with one lap. The course features scenic woodland trails..

The Longbridge 100 Backyard Ultra is a challenging last-person-standing endurance running event held at Church Farm, Litlington, near Alfriston. Participants run a 4.2-mile loop every hour, starting precisely on the hour, continuing until only one runner remains. The course features a mix of single..

The Fitstuff G3 Series No.2 is a running event held at Hound House Road, Surrey GU5 9JG. Participants can choose between 10km and 15km race distances. The start line and parking are conveniently located in a field off Hound House Road, marked with flags and signs for easy navigation.The event offers..

The Lavenham 10K Race is a scenic trail run held in the historic medieval village of Lavenham, Suffolk. The course covers 10 kilometers of mixed terrain, including footpaths, forest trails, shallow streams, and quiet rural roads, following the old disused railway line. This multi-terrain route offer..