Follow the River Wandle from the River Thames at Wandsworth to Croydon. The trail follows a largely traffic free National Cycle Network route so the paths are well surfaced and signed.
Starting in Wandsworth you head south to Southfields, passing along a traffic free section through public parks. You continue past Earslfield towards Wimbledon where you pass Wimbledon stadium and Summerstown. You continue to Merton Abbey Mills where you will find a pretty water mill and an arts and craft market. There is also a riverside pub which is a great place to stop for refreshments.
From Merton Abbey Mills you continue through Morden Hall Park where you will find 125 acres of National Trust owned parkland and gardens. The next section runs to Carshalton, passing Poulter Park and Allot Gardens. The final section runs from Carshalton into Croydon, passing through the pretty Beddington Park on the way.
Much of the trail is on traffic free, riverside paths so it's a good one for families. There are also good transport links along the way so it's easy to do just part of the route and then catch a train back.