Started July 7th at 4:44:40 AM at Willis Gulch Trailhead and finished at the same spot July 9th at 7:05:16 PM. There is currently a reroute due to the Interlaken Fire, which closes the Northern East/West junction point and a bit of the trail around it. So to still complete the loop I used the currently advised reroutes from the Colorado Trail Foundation. Net result is about 500' less elevation, but 3 more miles of distance. I had great weather all the time.
Day 1 I went from Willis Gulch to shortly before Hancock Lake. Day 2 I continued to just after the private property by Frontier Ranch (Princeton Hot Springs) and Day 3 I finished the loop.
I had some congestive issues starting Day 2, which plagued me on the big hills through Day 3, and maybe most unfortunately I slept very little on night 2 since I was coughing up phlegm.
Regardless, this is a brilliant loop packed with great views and fantastic trails!