Have a few differant routes depnding who i am riding with, they range from 20 miles to 60 miles, but my favourite route has got to be the other side of Epping,
http://connect.garmin.com/activity/252117341
We ride out from winchmore hill at 8 0 clock sunday mornings, anyone is welcome to join us.That looks like a nice route, must try that one day!