RideWithGPS just introduced their Surface Types addition (https://ridewithgps.com/news/4930-introducing-surface-types?otu=) for planning and then checking out routes before you ride. Your NCCC route planners will now have a good idea whether a planned route they may not have fully ridden has some surprise dirt ;). And for Sean's Long Roadies Adventure Week, he'll be able to pack even more adventurous "sectors" in for fun :P.
I will be there from this weekend until you return