Very fun game.  Not quick!  Don't get me wrong, it's nothing like Risk!  If everyone knows how to play and you rush them all (next person starts their turn while previous person is still laying their trains down on the board, etc) and you go super quickly you can play a game in around 30 minutes.  A leisurely pace takes 45 to an hour, depending on how much explaining you need to do or if you do a practice round and on how many players are participating.