It really depends on what kind of feel we're going for in the game. Sometimes we make it all take a very long time, and sometimes we literally just let the players use some simple 2nd circle instant teleport spell that can go to one side of Creation to another in an instant. (That's usually reserved for those crazy high-power games where we go around on giant mile long flying battleships and everyone has things that would be considered 1st age worthy in the standard setting though)