Centurion Autumn 100
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Event overview
The Autumn 100 is a 100 mile continuous trail race held on 17 October 2026 with race HQ at Goring Village Hall, High Street, Goring-on-Thames, Oxfordshire RG8 9AG. The route is made up of four 25 mile out-and-back spurs that use sections of the Thames Path and the Ridgeway National Trails and meet at Goring & Streatley. Terrain is approximately 80% trail and 20% road. Runners must finish within a 28 hour time limit.
Course layout and support
The course is run in this order: Spur 1 (Thames Path) Streatley to Little Wittenham and return; Spur 2 (Ridgeway) Streatley to Swyncombe Farm and return; Spur 3 (Ridgeway) Streatley to Chain Hill and return; Spur 4 (Thames Path) Streatley to Reading and return. The route is marked with National Trail markers plus Centurion branded ribbons and arrows. There are multiple road crossings that are not marshalled.
Support includes 16 fully stocked aid stations, hot drinks on legs 2, 3 and 4, hot food at Goring, and a dedicated race medical team. Drop bags may be accessed at Goring at miles 25, 50, 75 and 100 and must be under 30 litres.
Entry, qualification and rules
Entries open 8 November 2025 and places are allocated first come, first served. Entry fees listed are £220 for UKA affiliated runners and £222 for unaffiliated. Entrants must meet the qualification standard of a completed 50 mile race within 15 hours in the qualifying period. Pacers are permitted only from mile 75 on leg four and must run the full 25 mile leg. Crews are not permitted. Mandatory kit requirements include a charged mobile phone, minimum 1 litre water carrying capacity, survival blanket, waterproof jacket, whistle, primary and backup headtorch (minimum 100 lumens each), warm hat, gloves, long sleeve top kept dry, and a cup or mug. Visit the organization's website for the most recent information.
