The Dark Downs

OCT
3-4
2026
A 50 km night loop in the South Downs from Plumpton Racecourse with reflective route marking, four aid stations, GPS tracking and a 12 hour time limit.
3-4 Oct 2026
50 kilometers 20 miles Half Marathon

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The Dark Downs 50k

The Dark Downs 50k is a 50 km dusk till dawn loop on the South Downs, based at Plumpton Racecourse in Lewes, East Sussex. The route is mostly trail with an elevation profile of about 4400 ft ascent and descent and is described as 95% trail and 5% road. The course is fully marked with highly reflective signage and a downloadable GPX file is provided.

The event includes four staffed aid stations offering a wide range of food and drink, including vegan, vegetarian and gluten free options, plus women’s sanitary products. Live GPS tracking and chip timing are provided; all entrants receive a GPS tracker that must be worn and race numbers have timing chips and must be visible on the front of the runner. There is free onsite camping at the racecourse and parking and toilet and shower facilities are available.

Entry is open without a qualification requirement and the published entry fee includes the mandatory GPS tracker. Minimum entry age is 20 years. The race is an ARC permitted event (ARC/26/0735) and is a UTMB Index race awarded 2 ITRA points; results are submitted to UTMB, ITRA and DUV.

Organiser rules note no crew support, no pacers, a 12 hour overall time limit with cutoffs at later aid stations, mandatory safety kit requirements and guidance on low impact travel to Plumpton, which is about 400 metres from the local train station. Visit the organization's website for the most recent information.

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

Events nearby

Guided 15 miles trail run from Exceat along the Seven Sisters, South Downs Way and Cuckmere River to Cuckmere Haven, led by Trail Run Explorers.
A beach-based 10 km race on the low-tide sands of Worthing and Shoreham beaches, starting and finishing at the Coast Cafe on 13 August 2026.
Off road half marathon in Henfield on 16 August 2026 with riverside and disused railway sections, flint paths and stiles; facilities include changing rooms and free parking.
About 52 miles across the South Downs National Park, a circular challenge from Plumpton Agricultural College visiting Lewes, Glynde and Alfriston with about 7,000 feet of ascent.
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