Situated between Westerham and Tatsfield, at the western edge of the county, it lies close to where the A233 crosses the Downs en route to Biggin Hill.

[4][5][6][7] The highest part of the hill is unmarked, in an area inaccessible to the public, making it the only county top that is on private land and which cannot be easily visited.

[8][9] Westerham Heights, the highest point of Greater London at 245 metres (804 ft), is also part of Betsom's Hill, albeit with a separate name.

On the 20th of August 1887 it was the venue for one of the earliest cycle hill climbs,[10][11] even though it was considered nearly impossible to complete owing to the steep gradient of the then un-metalled road.

The winner was automobile pioneer Selwyn Francis Edge, using a safety bike, and celebrated deaf cyclist Arthur James Wilson finished 12th.