Two passes in the Rocky Mountains to match anything Europe has to offer This 150 mile North South mountain route from Montana to Wyoming takes in two of the best mountain passes for motorcycling anywhere in the USA, Beartooth and Chief Joseph. Each has their favorite, go and decide for yourself which you prefer! These are spectacular high mountain passes with Mountain Goats and can have rapid changes in weather conditions, so be prepared. Because of the changing weather conditions, the road surface in some places is not perfect and it is important to try to keep your line in some of the sharper turns to avoid possible unseen oncoming hazards. Overall Two Glorious Roads.