The route then passes through the edge of Ashtead and then begins to climb up to the North Downs, crossing the M25 motorway and then following the ancient Stane Street Roman Road through Tyrrell's Wood and on over Mickleham Downs from where a trip to neighbouring Box Hill on the path to the south is recommended for those making the return journey by foot. It otherwise reaches further south then west to reach the A24 and the North Downs Way which continues west about 200 metres to Box Hill & Westhumble railway station (Chapel Lane, Westhumble).