We rode Mt. Lemmon up to Summerhaven on the tandem in late October. It is a very nice ride. It has a more rolling profile once you pass the visitor center, so there is some relief from the long steady climb. It was much colder at the top than we expected, so the descent was pretty tough. Overall, we found Mt. Lemmon to be a very satisfying day in the saddle, and we were glad we had a granny gear on the bike. Regards. Joe