Good family rides in the area include:
Reculver to Minnis Bay CT6 6SSA lovely flat cliff top ride with a beautiful beach at the end. 3.7 miles only.
Crab and Winkle Line CT1 2AHFrom Canterbury to Whitstable. Start at Canterbury West and ride for 7 miles to Whitstable. You can ride back or hop on train back to Canterbury.
Fowlmead Country Park CT14 0BFAbout a 25 minute drive to this flat country park. Only walkers and cyclists allowed. Bikes can be hired by the hour
In fact the whole of the coastline of East Kent can be cycled from Reculver to Pegwell Bay with a few diversions inland!