Trail Running Calendar London 2025-2026

The London Backyard Ultra is a unique endurance running event held at Frylands Wood Scout Outdoor Centre in Croydon, London. Participants run a 4-mile loop every hour on the hour, continuing until only one runner remains, testing their true limits of stamina and mental strength. The event offers a c..

The Thames Path Ultra Challenge is a major endurance event along England’s iconic river, offering distances of 25 km, 50 km, 75 km, and a full 100 km route from Putney Bridge to Henley-on-Thames. Participants can walk, jog, or run at their own pace, with options for solo or team participation. The e..

The Run London Epping Forest Trail 10k is a popular running event scheduled for September 14, 2025, in the scenic Epping Forest, Chingford. Participants will complete a 10k course consisting of two laps through the forest, known for its rich biodiversity and beautiful landscapes. The race is designe..

The Richmond Park Half Marathon is a scenic trail run covering a half marathon distance entirely within Richmond Park. The event begins at Sheen Gate, where participants will navigate through picturesque routes, including views of lakes and wildlife. Runners will traverse various park gates, includi..

The London Epping Forest 50 Km will take place in London on Saturday 4 October 2025. You can run 50 kilometers.

The Thames Meander Autumn is a scenic riverside running event starting at the Petersham & Ham Sea Scouts HQ in Richmond, UK. The race features three distances: a 10km, half marathon, and marathon, all following flat, fast, and well-marked out-and-back routes along the Thames Path towpath. The 10km r..

The Kingston 10k, organized by RunUk, is an exciting running event that takes place in Kingston, Surrey. The race starts and finishes at the Kingston Hawker Centre, offering participants a scenic route through the streets of Kingston and along the river towpath. In support of the NHS, runners are en..