The NDW100 is a 100 mile continuous trail run along the North Downs Way.
The course travels from Farnham in the Surrey Hills to Ashford in Kent. total climb of 10,000 Feet. The race begins in Farnham at the Western end of the North Downs. The course works its way through some of the best of the English countryside before traveling through the small village of Puttenham and on to Guildford. It then continues on to Ranmore Common before the steepest climb of the race up to the top of Box Hill. The trail then drops down the other side and back up to Reigate Hill, on through Merstham to Oxted and a further 8 miles to Knockholt Pound and the 50 mile point at the outermost edge of Greater London. The course then travels on through Wrotham and Holly Hill before crossing the Medway Bridge. The final 25 miles see runners travel South East towards Dover running the majority on trails, paying brief visits to the villages of Detling, Hollingbourne, Harrietsham and Charing before dropping down into Ashford and the finish at the Julie Rose Stadium.