Centurion Autumn 100

Autumn 100

The Autumn 100 is a 100 mile (161 km) continuous trail race held on 17 October 2026 from Goring Village Hall, based in Goring and Streatley on the River Thames. The course is made up of four 25 mile out-and-back spurs that use sections of the Thames Path and the Ridgeway National Trails and converge at Goring and Streatley, forming a cross-shaped route. Total climb is listed as 5000 ft (1500 m). The terrain is approximately 80% trail and 20% road.

Runners must finish within a 28 hour time limit. The event provides 16 fully stocked aid stations and full medical support. Course navigation is aided by National Trail markers and Centurion branded reflective ribbons and arrows; several road crossings are unmarked and are not marshalled, so navigation and caution at roads remain the runner's responsibility.

Entries open 8 November 2025 and close 28 September 2026. Minimum age is 20. Entry fees are £220 for UKA affiliated runners and £222 for unaffiliated runners. Maximum starters are listed as 250 and current entry numbers are shown on the organiser's entry system.

Qualification requires a completed 50 mile race within 15 hours in the specified qualification period. Pacers are permitted from mile 75 only and must run the final 25 mile leg in full. Crews are not permitted. Drop bags are accessible at miles 25, 50, 75 and 100. Mandatory equipment includes a charged phone, minimum 1 litre water capacity, survival blanket, waterproof jacket, whistle, two light sources of at least 100 lumens, warm hat, gloves, a dry spare long-sleeved layer and a cup; missing items may incur penalties. Finishers receive Centurion 100 mile buckles with different awards for sub 24 hour finishes and for cumulative finishes across editions. Visit the organization's website for the most recent information.