To access the Whipple Couloir, park at the Neff's Canyon trailhead in Mount Olympus Cove. From here follow the road grade up into the canyon, stay left at the first branch, and you'll be heading E on a well travelled trail. The trail is narrow and treed, but pops out into an opening. Here you will branch to the right into the thick woods, and follow the trail as it winds up through the north fork of Neff's. This trail sticks to a ridgeline until it gets into the upper reaches of the canyon. Take a left in the upper bowl and stay in the trees until you top out on a minor peak. Continue to the ridge, and double back a few hundred feet and drop down the ridge to find the entrance to the Whipple Couloir.