Chiltern 50 Ultra Challenge

Set in the Surrey Hills, the Shere 42k, 21k & 10k Multi Terrain Event offers three trail running options from the picturesque Shere Recreation Ground. The 10k covers woodland and rolling trails with a 123m ascent; the 21k climbs about 543m across North Downs and Ranmore; the 42k marathon lifts aroun..

Bradenham Blast is a trail running event in the Chiltern Hills at Manor Farm, Bradenham, near High Wycombe, UK. Boondock Events offers 5km, 10km, and a new half-marathon for 2025. The courses are hilly, scenic, and suitable for many abilities, weaving through tranquil beech woodland and rugged trail..

SOX 10km, organized by Racing Line Running, is held at the South Oxfordshire Brewery in Ipsden (OX10 6AS). The open-to-all event offers a 10km multi-terrain course (60% off-road) suitable for all abilities and is canicross friendly. The route uses typically private trails, woodlands, fields and loca..

The Farnham Pilgrim Marathon is a scenic and challenging running event held in Farnham, Surrey, starting from The Sands on Seale Road. The marathon offers spectacular views across the Surrey Hills, known for its hilly and multi-terrain course that tests runners' endurance. Alongside the full maratho..

The Dunstable Downs Challenge Half Marathon is a scenic trail running event organized by Dunstable Road Runners, held at Creasey Park Football Centre in Dunstable. The 13.1-mile course takes runners across the picturesque Dunstable Downs and surrounding rural areas, primarily on public footpaths and..

Humanity Direct Tring Ultra is a one-day endurance event based at Tring Cricket Club in Hertfordshire, near London. Distances available: 50 km ultra, 27 km half ultra, and 10 km. Elevation gain: 135–597 m.The route showcases the Chilterns, including Ashridge Forest, the Grand Union Canal, and Wendov..