South Downs 100 mile (Autumn Event)

The South Downs 100 mile (Autumn Event) is a challenging single-loop trail race held in the scenic South Downs National Park, starting at Plumpton Racecourse in Lewes, East Sussex. Covering 100 miles with over 12,000 feet of elevation, the course features rolling hills and stunning views, supported by 12 aid stations. Runners have a 34-hour cutoff time to complete the race.

The event offers free onsite camping for participants over the weekend. Additionally, the race is part of the South Downs Triple Crown challenge, launching in 2025, where runners can complete three ultra-distance races within a calendar year. Visit the organization's website for the most recent information.