North Downs Way 100
Farnham, United Kingdom • 8 Aug 2026
Event
The North Downs Way 100® is an annual Centurion Running event held on 8 August 2026. It is a continuous trail race with a 30 hour overall time limit. The event is listed as a qualifying race for Western States and runs under a UK Athletics permit.
Course
The route follows the North Downs Way from Farnham in Surrey to Ashford in Kent, finishing at the Julie Rose Stadium. The course distance is given as 103 miles (167 km) with about 11,000 ft (3,350 m) of climb. Terrain is roughly 80% trail and 20% road. Notable route points include Puttenham, Guildford, Box Hill, Reigate Hill, Knockholt Pound (the 50 mile point), Detling and Charing. The course is marked by national trail markers plus additional tape, arrows and chalk at major junctions.
Race format, logistics and services
Planned starters are 250 and there are a minimum of 12 fully stocked aid stations, with hot drinks and hot food at several later stations and the finish. Mandatory kit must be carried at all times and includes a charged mobile phone, water carrying capacity (minimum 1 litre), survival blanket, waterproof jacket, whistle, primary and backup lights (from Knockholt Pound), long-sleeve spare layer and a cup. Drop bags are permitted to specific aid stations and must meet size and labelling rules. Pacers are allowed from Mile 54.5 and crews are permitted with restrictions on vehicle use and permitted crew points. Qualification requires completion of a minimum 50 mile race within 15 hours in the specified qualifying window. Visit the organization's website for the most recent information.