The Serpent Trail is a 64-mile (103 km) long distance footpath.

It runs from Haslemere to Petersfield,[1] 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.

From Upperton to Petworth the official route follows the public road, but many walkers may prefer to cross Petworth Park, which can be entered down some steps by the southernmost house in Upperton.

From the east side of Petworth the trail crosses the Shimmings valley and climbs the sandstone ridge, passing through Flexham Park to Bedham, where it turns southward in a gentle descent to Fittleworth passing, at its easternmost part, close to Brinkwells, the former home of composer Sir Edward Elgar.

The trail is waymarked with white plastic discs showing a snake in the approximate shape of the route on a purple triangle.