Buttercups is a large barn cafe, with loads of space for social distancing. It is part of a petting farm complex off the Tilton Road, just North of the A47.
The 78 km route shown is HERE on Strava, and in the GPX file below.
And below is a shorter route with the cafe coming up 38 km into a 63 km loop.
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.