Winter Downs 100

Mickleham, United Kingdom • 11 Dec 2026

Winter Downs 100

The Winter Downs 100 is a 100 mile continuous trail run held 11 December 2026 that runs point to point from Amberley Museum to Juniper Hall. The route follows the South Downs Way, Wayfarers Walk, St Swithuns Way and North Downs Way and is the same course as the second half of the Winter Downs 200. Total elevation gain is listed at about 10,000 ft (3,050 m). Terrain is a mix of trail and road, approximately 84% trail and 16% road.

Runners have a 35 hour overall time limit and live tracking is provided across the event. There are three aid stations on course; each provides hot food and volunteer medical support. Runners may be crewed at specified locations and may use drop bags at the three checkpoints. Drop bags are optional, must be submitted separately for each checkpoint, and are limited to 10 kg and 50 litres; bags are weighed at registration.

Entries are limited to an anticipated field of 100 starters and are subject to qualification and acceptance by race management. Applicants must declare previous running or multi sport experience; completion of a single stage trail 100 km event or equivalent winter or mountain self powered journeys is cited as a suitable reference. Pacers are not permitted. A full mandatory kit list is enforced, including communication, navigation, lighting, waterproofs, thermal layers, first aid and food supplies. Visit the organization's website for the most recent information.

Race information

100 mi
100 Mile
Visit the organization's website for the most recent information.
Trail runs nearby

A timed riverside event on a 5.3 km out and back Thames course where runners choose how many laps to complete within a seven hour limit. Ten pound entry supports the Rays of Sunshine charity and a double sided medal is awarded.

Run laps through Denbies Wine Estate in the Fire Horse Run, a timed off road challenge on an undulating 5.3 km loop with distances from 5 km to ultra. Pick as many laps as you like within a seven hour window for a flexible, scenic race day.

A three-race one-mile series at Jubilee Retreat on 6 June, 4 July and 1 August 2026, begun in 2009 to fund the Orion clubhouse. A reduced series rate is available and age-category and team trophies are awarded, with the third race part of t..

A 5k obstacle course at Cassiobury Park where participants climb, crawl and slide across a largely flat, mixed-terrain route. The event supports fundraising for cancer research and includes a medal, refreshment facilities and on-course assi..

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.