If you add a ride to and from Dorking, even add Box Hill perhaps, this could be quite an epic Spring/Summer ride for anyone who likes hills.
60mile circuit from Friends Life in Dorking, the 6000′ of climbing includes Westhumble-Ranmore. Barhatch, Leith Hill, and Whitedown almost at the end.
There’s a longer route, but it doesn’t add much climbing
Total climbing: 5184 ft
Note: these routes have been submitted by Dittons Velo riders as routes they have enjoyed or would like to do, they’re not tested for safety or suitability