Centurion Autumn 100

OCT
16
2027
A 100 mile trail race from Goring and Streatley run as four 25 mile out and back legs on the Thames Path and Ridgeway, with 16 aid stations and a 28 hour cut off.
Sat 16 Oct 2027
UTMB 100M ITRA 5 100 miles

Always double-check with the organizer's website! This page may contain affiliate links.

Autumn 100

The Autumn 100 is a continuous 100 mile trail race based in the twin villages of Goring and Streatley on the River Thames. The course is made up of four separate 25 mile out and back spurs that use sections of the Ridgeway and Thames Path national trails, with each spur starting and finishing in Goring and Streatley. The published route order is Thames Path to Little Wittenham, Ridgeway to Swyncombe Farm, Ridgeway to Chain Hill, and Thames Path to Reading, returning to Goring for a 100 mile total.

The route covers mostly trail terrain with around 20% road and 80% trail, and total ascent of about 5000 ft (1500 m). The event provides 16 fully stocked aid stations placed along the course, race medical support, and course markings in addition to national trail waymarkers. Drop bags are available at miles 25, 50, 75 and 100 and must be under 30 litres. Pacers are permitted only from mile 75 for the final 25 mile leg. Crews are not permitted.

Entry is limited and requires a qualifying performance: completion of a 50 mile race within 15 hours between 1 January 2022 and race day. The event enforces a 28 hour overall cut off. Finishers receive Centurion 100 mile buckles, with special recognition for sub 24 hour finishes, and prizes are awarded to overall and age group top finishers.

Mandatory kit includes a charged mobile phone, a minimum 1 litre water capacity, survival blanket, waterproof jacket with sealed seams, whistle, two lights of at least 100 lumens, warm hat and gloves, a long sleeved spare top kept dry, and a cup or mug. Visit the organization's website for the most recent information.

Events nearby

Multi terrain 5K and 10K trail races in Radnage, Chiltern Hills, raising funds for the village school and including a one mile children's fun run.
Trail races at Mapledurham Estate in 2026 with 10K, 10 mile and half marathon courses across muddy paths, woods and estate roads and postrace refreshments.
Watlington XC 10k is a 10 km cross country fell run over the Ridgeway and Chiltern Hills for runners aged 16 and over, with pre-registration required and no entries on the day.
A 10 km trail run on the Yattendon Estate at Renegade Brewery on December 24th, with a Canicross category, medal, pint cup and a mince pie for finishers.
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.