The Colorado trail was my favorite hike to date and the collegiate west was my favorite section of that hike. And the CW keeps getting better as the CTF moves more and more trail off mixed use track and onto single track. In my opinion, of the sections of the CDT I've hiked (only those coinciding with the CT) and the PCT I've hiked (Mexico to Tuolumne) the big challenge of Colorado over CA is the weather being much more volatile with near daily precipitation and storms, at least when I went during August. Pct weather seems far more benign making for easier hiking and less stress over avoiding storms.