It’s a long way away, but we finally got up there to do this loop. Starting with about 5.5 miles climbing on the road, you then get another 5 miles or so of singletrack climb. This singletrack is minimally technical; just a good steady climb.
Once at the top, there are some beautiful views back into Rocky Mountain National Park from the top. A spur of trail (that we didn’t take) gets you to the true summit of Crosier.
Then it’s 4.5 miles of descent, some of it pretty sketchy and loose, but still pretty fun.
I’d do it again: