The Dark Downs

OCT
3
2026
Looped night trail races on the South Downs from Plumpton Racecourse, offering 50k, half marathon and 20 mile options with marked course and staffed aid stations.
Sat 3 Oct 2026
UTMB 20K/50K ITRA 1–5 50 kilometers 20 miles Half Marathon

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The Dark Downs

The Dark Downs comprises looped night races on the South Downs, based at Plumpton Racecourse, Lewes. The event offers trail running over rolling hills and runnable, untechnical terrain, with courses designed to be suitable for running after dusk and into darkness.

Distances include:

  • 50k
  • Half marathon
  • 20 mile

The 50k race forms part of the South Downs 50k Triple Crown, where runners can choose three qualifying 50k events to complete the series. Runners and walkers are given set time limits to finish: options include six and twelve hour cutoffs.

The course is fully marked and uses high visibility reflective signage. Marshals are positioned at regular intervals and aid stations are supplied with volunteers to support participants on the route. Night running is highlighted as useful preparation for longer ultramarathons and for gaining experience in racing in low light conditions. The South Downs hold a Dark Sky Reserve designation, noted for clear, starry nights that can be visible during the event. Visit the organization's website for the most recent information.

50 km
Dark Downs 50k
20 mi
Dark Downs 20 Mile
Half Marathon
Dark Downs Half Marathon

Events nearby

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A guided loop trail run around Lewes of about 18 miles with over 2600 ft of ascent, passing Mount Caburn, Firle Beacon and Kingston Ridge.
A 12 km team navigation endurance challenge along the Seven Sisters and South Downs Way with load bearing and non load bearing categories.
A 13 km run through the South Downs near Lewes on 19 September 2026 that raises funds for South Downs Conservation and the Amphibian and Reptile Conservation Trust.
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