Had a look through the literature.
Once again, a Sportive and 'Challenge ride' which includes some of the most demanding hills in the region. ( ~Except Saintbury, Fish Hill and Sun Rising Lane ).
I've also had a look at the routes. Yes, they follow country lanes, so If your wheels are lighter than Dura-ace and have less than 24 spokes, I'd suggest you take the main roads between the feeding stations, or give it a miss altogether.
The short 'leisure ride' has a half way stop at Walton Hall, former private home of Danny la Rue ( Dan Carroll, Irish Female impersonator ).