South Downs 100 mile (Autumn Event)

OCT
3-4
2026
Experience a 100 mile trail loop through the South Downs National Park with 12,000 feet of elevation gain and 12 well stocked aid stations.
3-4 Oct 2026
UTMB 100M 100 miles

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South Downs 100 Mile (Autumn Event)

The South Downs 100 Mile is a point-to-point trail race through the South Downs National Park in East Sussex. The course follows a single loop that starts and finishes at Plumpton Racecourse. The terrain consists of 95% trails and 5% road, featuring rolling hills and approximately 12,000 feet of total elevation gain.

Participants have a 34-hour cutoff time to complete the distance. The route includes 12 aid stations providing a variety of food and drinks, including vegan, vegetarian, and gluten-free options. To support sustainability, the event does not provide energy gels or single-use plastic cups; runners are encouraged to bring their own hydration systems and foldable cups.

Registration requires a qualification of having completed at least one 50-mile race within the last four years. The minimum age for entry is 20 years old. Mandatory kit is required for all participants, including items such as a waterproof jacket, headlamps with backup, a foil blanket, and a mobile phone with the route downloaded as a GPX file.

The event includes:

  • 100 miles

Finishers receive a buckle and a medal. Live GPS tracking is provided for all runners. Onsite camping is available at Plumpton Racecourse for participants over the weekend. The race is a UTMB Index race and awards 5 ITRA points. Visit the organization's website for the most recent information.

100 mi
100 Mile Race

Events nearby

A 12 km team navigation endurance challenge along the Seven Sisters and South Downs Way with load bearing and non load bearing categories.
Run a 13 km route through the rolling hills and woods of the South Downs near Lewes to support local wildlife and land conservation efforts.
Community fun run in Horsted Keynes with 2.5K, 5K and 8K countryside routes; proceeds split between the school PTA and Rocking Horse Children’s Charity.
Six hour trail event at Bates Green Farm where runners complete as many 3.6 mile laps as they choose, solo or in relay, with a vegan friendly cup free aid station.
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