This race is currently 10% full
100 Mile UTMB Badge
South DOWNS 100 MILE
Saturday 3rd October 2026
Welcome to the South Downs 100 miles

The South Downs 100 miles, is a single loop trail race through the beautiful South Downs National Park. Runners will begin at the fantastic venue of Plumpton Racecourse before encountering an iconic and beautiful but challenging route. There is over 12,000 ft of elevation, with rolling hills, stunning views, 12 aid stations and a 34 hour cutoff time.

This race will also form part of the new South Downs Triple Crown starting in 2025 if you wish to enter.

https://www.ukultra.co.uk/south-downs-triple-crown

Our permits are granted through the ARC. Permit Number pending.

Start Location
Plumpton Racecourse, East Sussex
Finish Location
Plumpton Racecourse, East Sussex
Start & End Times
6am (sat 3rd)-4pm (sun 4th)
Minimum Age
20 years old
Qualifier Needed
qualifier required
(See bottom of page)
Aid Stations
12 stations
Elevation Profile
12,050ft ascent
Terrain
95% trail, 5% ROAD
Entry Fee
£175.00
(price includes mandatory GPS Tracker)
*Instalment Payments Available
COURSE RECORDS
Male
TOM HARVEY
17:45:51
Female
LEONIE TON
22:52:28
Male Vet (40+)
TOM HARVEY
17:45:51
Female Vet (40+)
LEONIE TON
22:52:28

Entry & Qualification details

In order to qualify, runners must have completed at least a 50 mile race within the last four years. Ideally this should be a trail race but it is not mandatory. Runners must also have a good amount of trail running experience in general, and of running during darkness. Runners can enter before achieving this qualifier but it must be updated before race day. To update this please email neil@ukultra.co.uk Entries will close 1 week prior to the race or once entry limits are reached.

A qualifier can come in many forms but essentially you must have run 50 miles or more in a race format where results can be viewed online (Strava runs or similar are not accepted) Any road or trail race is fine as is a double Ironman. Please get in touch via the above email with any queries regarding what counts as a qualifier.

Refund, Deferral and transfer Policy

Any time up until July 2nd 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 there is a small fee that must be paid.

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..

Elite Entries

We want highly competitive races at the sharp end of the fields and, welcome elite runners to come and compete. We do reserve places for elites and have packages in place to help. These are decided on an individual basis by the Race Director. If you are an elite runner and would like to take part then please email neil@ukultra.co.uk

UK Ultra 100 Mile silver medal
UTMB Index Logo
What is included?
  • A fantastic run along a truly stunning, fully marked course in the heart of the South Downs National Park.
  • Bespoke male and female winner trophies
  • Prizes for all male and female winners in Vet categories over 40, 50, 60 and 70
  • Bespoke UK Ultra 100 mile finisher buckle
  • Live GPS tracking and chip timing to track runners progress and times
  • 12 well stocked and volunteered aid stations
  • Free camping at Plumpton Racecourse
  • 5 ITRA points
  • This is a UTMB Index race
  • First Aid and medical cover
  • Event insurance
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