Autumn 100 - Centurion Running

The Autumn 100 - Centurion Running is a 100-mile ultramarathon run as four 25-mile out-and-back spurs that all reset at Goring Village Hall in Goring-on-Thames. The course uses the Thames Path and the Ridgeway national trails and is predominantly off-road, with route waymarking, Centurion-branded ribbons and map resources provided by the organiser. Runners benefit from 16 fully stocked aid stations, drop-bag access every 25 miles and hot food and indoor warmth at the race HQ to refuel between spurs. The event forms the finale of the Centurion Grand Slam season and offers both individual entries and a Grand Slam ticket option for those taking part in all four 100-mile events.

Competitors must satisfy the organiser's qualifying standard (a prior 50-mile finish within the stated time window) or complete a qualifier before race day, and strict mandatory kit requirements apply with random kit checks on course. Pacers are permitted from Mile 75 for the final 25-mile spur and crews are not permitted at aid stations due to local constraints. Finishers receive Centurion 100-mile buckles with different buckles awarded for sub-24-hour and 24–28-hour finishes, and podium prizes and age-group awards are presented for overall placings. Entrants should consult the official event pages and athlete information for full rules, kit lists and final logistical details.