Doyd, even though you won't be able to see them on a regular basis, please don't think that you've lost a friend; rather, you've merely gained some distance and have a new place to visit for all-chicks road trips!
My oldest friend of my life lives in Denver and my second oldest lives in San Diego, I still consider them both my closest friends. Technology has made all the difference and though it will be a little harder, you will still be great friends.