The Pawnee Pass (12,541') - Buchanan Pass (11,837') Loop is a terrific, tough and super scenic 26-mile route in Colorado's Indian Peaks Wilderness. Here is a nice trip report on the route from Charles Danforth (from which I took the map and photo). More photos are here.

Matt Hart established a new route circumnavigating the Teton Range of Wyoming, that looks to be an instant classic. It is 33.7 miles with 8,165 feet of gain (according to the topo).