Lewes, East Sussex, UK

The UK Ultra Dark Downs 50K on 3 October 2026 is a Dusk till Dawn loop in the South Downs, starting and finishing at Plumpton Racecourse in Lewes. The race will start as the sun is setting, and runners/walkers will have 12 hours to complete it. Terrain is 95% trail and 5% road. There will…