I'm in, at the moment building up slowly after 3 months off riding with plenty climbing in weekly ride to build up strength, and longish ride at the weekend. Also eating more healthy with plan to drop a couple of stones.
Not much more science than than, current odds are 4:1 against completion within time cut offs at the moment.
I am going on the premise of the running club I useed to be in who always said "if you can run 13 miles, you can run 26" in terms of maximum capability.

