Mtb: 50ish miles at the VT 50
Road: 100km which relates to 60 something miles
Nice work on the 15 miler Brian. Twenty milers are in your immediate future...just be sure to throw in the flatter flowier miles on the Scoville side and it won't hurt as bad when you are finished.
We had quite a bit of climbing in our route. The next time we do a long ride the Johnnycake climb most likely won't be part of the route (at least not all of it), so that will help on the fatigue front.