It seems that about half of the CT is on the CDT. Most of the spectacularity, so to speak, is on the CDT portion, IMO. Why not just do a CO section hike on the CDT? (Having written that, I can think of one reason: If you do the whole CT you’re a thru-hiker, but if you hike only the CDT in CO, you’re a section hiker, lower in the caste system. Just kidding, sort of.)
Al H.