South Downs 100 mile (Autumn Event)

OCT

3

2026

Tackle the South Downs 100 mile, a single loop through the National Park with rolling hills, stunning viewpoints and roughly 12k ft of ascent. Aid stations and a 34 hour cutoff make this a classic ultra challenge.

Sat 3 Oct 2026

Lewes, South East (England)

Registration

100 miles

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Event overview

The South Downs 100 mile is a single-loop trail race through the South Downs National Park. The course begins at Plumpton Racecourse in Lewes, East Sussex, and covers 100 miles with more than 12,000 ft of total elevation gain. The route includes rolling hills and multiple viewpoints and is supported by 12 aid stations. The race has a 34 hour cutoff time.

Details and entry

The event is scheduled for 3 October 2026 and is organised by UK Ultra. Free onsite camping is available over the weekend. The 100 mile race forms part of the South Downs Triple Crown, a challenge that begins in 2025 and requires completion of three ultra-distance races within the calendar year; four variations of the Triple Crown are offered. Entry is open to entrants aged 20 and over on 03/10/2026. Entry fees are listed in the range of £173–£175 and the event status is shown as open. Visit the organization's website for the most recent information.

100 mi

100 Mile