Bill P from Ottawa, KS on 10/23/2012 06:20 AM
I concur with the other comments here.
A buddy and I did the trail earlier this month, Clinton to Machens. We covered it in 4 days, and our itinerary was basically (rounded-off) 70 miles, then 50, then 70, then 50.
As mentioned, the 50 mile days definitely gave you time to relax a little bit, see some stuff, maybe start out a little later in the morning and/or get there a bit earlier in the evening. The 70 mile days we certainly did stop and get off the bike to look around, and had lunch of course, but covering the distance was a priority.
We met and spoke with several riders on the trail, a number of whom were also doing the full trail, and consistent with comments here, most of them seemed to be doing it in about 5 days. Some 6 days.
My best recommendation - if you want to take a little time and see all the stuff (which I highly recommend) plan to do it in about 5 days. Nail down your exact dates as early as you can and work to reserve the B&B's for those dates - they fill up well in advance in many cases. And you mention Fall 2013...if I can suggest the 2nd/3rd week in October, the foliage is incredible. It was very pretty when we went; we got the sense that if we'd gone a week or two later it would have been even more vivid.
Good luck and above all, have fun!