(See "Getting There" section on main page for pictures.)
From Colby Lake, hike up slabs and ramps that loosely follow a creek flowing from the east. The creek forks after a tenth of a mile. Take the north fork of the creek until reaching Lake 11,522. Follow the lake around the northern shore until reaching the base of Milestone Mountain below the Northwest Face, which is the southeastern shore of the lake.
This is a nice route. Ascend the gentle scree slope until a short, 50 ft. cliff is reached. Climb over the cliff via class 3 ramps and ledges and ascend another short stretch of scree. Climb the chute marked in the picture. The chute consists of mostly nice, solid, class 3 climbing with a few, but not too many, loose rocks. Just below the top of the ridge, gradually ascend left (east) toward the top of the ridge. Soon, the summit block is in view, which looks much more difficult than it actually is. Traverse the ridge toward the left (north) side of the summit and ascend a few more feet until reaching the side of the summit block. The route up the block becomes obvious. There are rocks, cracks and ledges that provide ample footholds and handholds for a solid class 3 climb to the top.
If you have information about this route that doesn't pertain to any of the other sections, please add it here.