One thing about this section of the wilderness area that I was interested in visiting is that it is a bit of a drive from Fort Collins, CO. The route I took, which I think is the shortest route for me, was through Rocky Mountain National Park, over Trail Ridge, and then past Lake Granby. You actually spend a fair amount of time driving along the shoreline of Granby Lake, then cutting off on a small two lane road (which eventually turns into a well maintained gravel road) into the Arapahoe National Recreation Area. You have to travel through the "rec" area in order to get to the trailhead that I wanted to use that go into the Wilderness area. Of course, the wilderness area extends over the continental divide to the east, so you could enter it on the east side by going up through Longmont or Boulder. However, the eastern sections will be more traveled and of a different ecosystem (generally drier).