Linked maps didn't work for me, can you check them? I'd be happy to comment on your northern loops if i knew what it was.

as to long days, don't forget climbing at altitude can be more challenging than at sea level, so you might not want to bite off more than you can chew.

searcy for "grand loop" under my username for a RMNP loop suggestion.
(here: http://www.bikeforums.net/showthread...op#post6483690)