Buckskin Pass is a part of the 4 Pass Loop, but you can just hike out to the top of it and back from the Maroon Lake trailhead. It is just short of 10 miles round trip from the parking lot, and the trail is steep the whole way, with about 3100ft of elevation gain. It is best mid to late July, with endless flower fields all the way to the top! The views to the other side are absolutely stunning!