HI, A good route is Sustrans route 21, it runs from Greenwich all the way to the south coast. You can access it at ladywell fields and a nice day trip is to go to South Norwood Country Park and back which takes about 4 hours, most of it off or on quiet roads. Or at Ladywell fields you can turn south, go to greenwich and get on the Thames Path, and go down to the thames barrier and back. You may also find it useful to check out www.cyclestreets.net which will work out a quiet route for you. All journey planners are a bit eccentric so use with care, but can be a useful start. paul