This race is 10% full
20km UTMB Badge
Dark downs 20 Mile
 Saturday, October 3rd, 2026
Welcome to the Dark Downs 20 mile

The Dark Downs 20 mile is a beautiful route in a stunning location, through the South Downs National Park. It is an achievable single loop trail race that is a great option for first time trail runners and, also a great way to prepare for longer events later in the year.

There is something quite unique about running at night. The atmosphere, the camaraderie, the challenge, the novelty, and the cooler temperatures all make for a fantastic experience and this race will hopefully provide all of this. The South Downs as always will bring rolling hills, runnable trails, and are also ideal for a race in the dark due to its untechnical terrain.

Night running is something that a lot of ultras require nowadays, so not only is this a great race in itself, it is also a great opportunity to get out and get some night running experience in a race format. Great practice for any upcoming ultras and especially our Winter races later in the year. As with all our races, the route is fully marked with highly reflective signs and regular, fully stocked Aid Stations. Please note that the entry fee for this race is slightly higher than our other 20 mile races due to the inclusion of a mandatory GPS Tracker which must be worn by all runners for Health and Safety reasons of running in the dark for an extended period.

Permit: Our permits are granted through the ARC. Permit number pending.

The sun sets over rolling green hills, casting an orange glow across the sky.
Runner finishes race at night under an illuminated "UK Ultra" arch, wearing a headlamp and gear.
About the race

The South Downs were awarded the Dark Sky Reserve Award in 2016 due to its exceptional starry nights, so there is no better place for a race like this to get some amazing views. The race will start at 6.30pm on Saturday, October 3rd 2026, as the sun is setting.

Start Location
Plumpton Racecourse, Lewes, BN7 3AL
Finish Location
Plumpton racecourse, Lewes, BN7 3AL
Start & End Times
6.30pm- 2.30am (8 hour cutoff)
Minimum Age
20 years old
Distance
20.6 MILES
Elevation Profile
2400ft ascent & descent
Terrain
99% trail, 1% tarmac
Entry Fee
£53.00
(price includes mandatory GPS Tracker)
*Instalment Payments Available
COURSE RECORDS
Male
Female
 
Male Vet (40+)
Female Vet (40+)

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Entry details

Entries are available on a first come, first served basis and once it is full, they will be closed. No waitlist will be in operation. No qualifier is needed in order to participate. Entries will close 1 week prior to the race or once entry limits are reached.

Refund, Deferral and transfer Policy

Any time up until July 27th 2026 you are entitled to a 50% refund. After this time no refunds will be given. The only exception to this is pregnancy. In this case if you inform us before the race you will receive a full refund.

If you can no longer make the event, there is the option of deferring your place to 2027 or transferring it to another runner. Deferrals to the following year can only be made up until two weeks before race day as can transferring to another runner. Deferrals can only be made once and if made within six weeks of the event there is a small fee that must be paid as there is a cost to us with some costs already having been incurred.

Pregnant women will be able to defer their place to 2027/28 if they wish and for a further 2 years if they fall pregnant again within that period. Please email neil@ukultra.co.uk if you wish to make any of these changes..

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What is included?
  • A fantastic, fully signed and way marked route through the South Downs National Park
  • A bespoke UK Ultra finisher medal
  • Bespoke male and female winner trophies
  • Downloadable free race photos
  • Live chip timing
  • Prizes for all male and female winners in vet categories
  • Event insurance
  • First Aid and Medical cover
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