The Serpent Trail is a 64-mile (103 km) long distance footpath. It runs from Haslemere to Petersfield, which are 11 miles apart in a straight line, by a route which is designed to join up the many heathland areas on greensand in the western Weald. The path takes its name both from its serpentine shape and from passing through habitat of all three British species of snake (adder, grass snake and smooth snake).