The Dark Downs
Lewes, United Kingdom • 3 Oct 2026
Event overview
The Dark Downs is a night-time running event held on the South Downs with two looped races:
- 50k
- Half Marathon
The races start at dusk and continue into darkness. Runners and walkers have set time limits to complete the courses: 6 hours and 12 hours. The 50k forms part of the new "50k" South Downs Triple Crown; the series includes five 50k races, and participants may choose any three to attempt the Crown.
Course, location and support
The event is based at Plumpton Racecourse, Lewes, on the South Downs. The terrain is described as rolling hills and runnable trails with generally untechnical surfaces suited to night running. The South Downs received a Dark Sky Reserve award in 2016 for its starry nights. The course is fully marked with high-visibility reflective signage and has marshals at regular intervals. Aid stations are provided and staffed by volunteers. Visit the organization's website for the most recent information.