Centurion Autumn 100
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Event overview
The Autumn 100 is a 100 mile (161 km) continuous trail race held on 17 October 2026. It is based in the twinned villages of Goring & Streatley on the River Thames, with registration and race HQ at Goring Village Hall, Oxfordshire RG8 9AG. The route uses sections of the Thames Path and the Ridgeway National Trails and is approximately 20% road and 80% trail. The race is held under a UK Athletics permit and is course marked with national trail markers and additional reflective ribbons and arrows.
Course and logistics
The course is four separate 25 mile out-and-back spurs that start and finish in Goring & Streatley:
- Thames Path spur to Little Wittenham and return
- Ridgeway spur to Swyncombe Farm and return
- Ridgeway spur to Chain Hill and return
- Thames Path spur to Reading and return
There are 16 fully stocked aid stations, with hot drinks on legs 2, 3 and 4 and hot food available at Goring. Drop bags can be accessed at Goring at miles 25, 50, 75 and 100; each bag must be under 30 litres.
Entry, rules and safety
Entrants must be at least 20 years old. Entries opened 8 November 2025 and close 28 September 2026. To start, runners must have completed a 50 mile race within 15 hours between 1 January 2021 and race day; qualifiers will be checked before the race. There is a 28 hour finish time limit and additional cut offs at aid stations. Pacers are permitted from Mile 75 for the final 25 mile leg only; crew access is not permitted. Mandatory kit includes a charged mobile phone, 1 litre water capacity, survival blanket, waterproof jacket, whistle, two lights (minimum 100 lumens each), warm hat, gloves, long-sleeved spare layer and a cup. Random kit checks will be carried out and missing mandatory items may incur a one hour penalty. Visit the organization's website for the most recent information.
