Get to Crested Butte, Colorado and take Kebler Pass for 7 miles, take a right at the sign to Lake Irwin and continue for 2 miles.
I originally planned to go to Lost Lake which is about 12 miles from Lake Irwin, but the Forest Service is upgrading the campground and therefore have closed public access to Lost Lake. So I sped back to Lake Irwin and was greeted with a beautiful sunrise, with the still water of the lake providing a gorgeous reflection of Mt. Owen and Mt. Ruby.