Mapping software is, alas, a weak spot in the Mac software catalog. Street Atlas USA and Route 66, for example, are no longer available for the Mac.
Then again, who cares? You live in the age of Google Maps (http://maps.google.com). It’s fast, it’s convenient, it works the same on both Mac and Windows, it gives spectacularly good driving directions, and it’s free.
18.191.189.186