The Gurston Down Speed Hill Climb is a hillclimb in Broad Chalke, Wiltshire, England, organised by the South Western Centre of the British Automobile Racing Club.
The first practice meeting was held on 25 June 1967, when Patsy Burt, driving a McLaren-Oldsmobile set a time of 39.90 sec.
Motorcycles also visit the venue five times a year, and run as part of five of the single-day events.
The farmland the course traverses is also used for pheasant shoots and the course itself has found a dual use as a gravity racing venue.
In July 2009, the third round of the Gurston Down Speed Hill Climb Championships was dedicated to Marsh's memory following his death in May.