South Downs 100 mile (Autumn Event)
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South Downs 100 Mile (Autumn Event)
The South Downs 100 miles is a single loop trail race held in the South Downs National Park, starting and finishing at Plumpton Racecourse. The course includes approximately 12,000 ft of ascent, rolling hills, and a mix of trail and short road sections; terrain is listed as 95% trail and 5% road. The route is fully marked and supported by 12 aid stations. Free on‑site camping is available at Plumpton Racecourse over the event weekend.
Entry requires a qualifying performance. Runners must have completed at least a 50 mile race within the last four years and should have experience of trail running and running during darkness. Athletes may enter before achieving the qualifier but must update it prior to race day. Entries close one week before the event or when limits are reached.
Timed services and safety provisions include live GPS tracking, chip timing, first aid and medical cover, event insurance, and volunteer staffed aid stations. The event awards a bespoke 100 mile finisher buckle, carries 5 ITRA points, and is an approved UTMB Index race. A refund and deferral policy is published; a 50% refund applies until July 2nd 2026, with an exception for pregnancy allowing a full refund or specific deferral arrangements. Prize categories and vet prizes are provided and the event is permitted through ARC (Permit ARC/26/0734). Visit the organization's website for the most recent information.
