>>1048315>but the longest and the toughest by elevation and weather variationIt's not that bad really. I took some detours when I did it, ended up riding ~4800 miles and finished in ~2.5 months, stopping for some hiking at the nice destinations along the way. I also ended up riding about half of it with some people I met along the way.
Colorado was a little bit tough, mostly because I detoured to do two 12,000 foot passes (pic related). The first had me stopping every 3 minutes to catch my breath. After getting acclimated, the second was no worse than any other hill.
I think the designed route is more like 4600 miles. All things considered, the trip was probably the easiest longer trip (> 1 week) trip I've taken.