We are very lucky to have two country Parks (the National Trust’s Petts Wood & Hawkwood and Scadbury Park either side of the A208 between Chislehurst and Petts Wood, with many paths to explore. Here is a link to the National Trust web site pages for Petts Wood and Hawkwood, which also covers St Pauls Cray Common. There is a map there too: https://www.nationaltrust.org.uk/petts-wood-and-hawkwood