Here's a summer route to Wistow Garden Centre, with the coffee break coming after 160 km of an 85 km ride. It takes in some lovely roads North of the A47, so there might be a few hills to get over!
Here are some routes that we regularly use for club runs. Use the Categories to limit the routes you see. The compass points relate to where the ride goes from the clubhouse. Routes can be downloaded for your cycle computer, either directly as a GPX or via Strava for TCX.