The Wandle Trail is a 12.5-mile (20 km) walking and cycling trail that follows the River Wandle from Croydon to Wandsworth in south-west London.

The River Wandle is a right-bank tributary of the River Thames in south London, England. With a total length of about 9 miles (14 km), the river passes through the London boroughs of Croydon, Sutton, Merton and Wandsworth, where it reaches the Thames. A short headwater – the Caterham Bourne – is partially in Surrey, the historic county of the river's catchment. Tributaries of the Wandle include Carshalton Ponds and Norbury Brook.