Originally Posted by
Coffee
The full Collegiate Loop is 160 miles so each "side" is about 80. However, by ending the Collegiate West at Monarch Pass, that probably cuts it down to around 75. There are some steep parts like Hope Pass which you would probably get to on the first day of the hike if heading southbound. But there are sections along the continental divide that aren't very difficult. Acclimating to the elevation could be an issue, so I would recommend staying a couple of nights at elevation prior to starting the hike. One good option might be to spend a night in Breckenridge and then another night in Leadville before starting.
I cannot comment on the Collegiate East since I didn't hike it. But it is lower elevation and the description I heard from other hikers makes me think that it is mainly good as a bad weather alternate to the Collegiate West.