As many railfans know, the Sunset Limited is a tri-weekly train. Most other long distance trains are daily. The reason? Union Pacific refuses to let Amtrak run the train daily. Sure, the UP Sunset Route is busy. However, Amtrak has a daily train on the much busier BNSF Transcon. Up until California, the UP Sunset Route only gets about 40 trains daily. The Sunset Limited is one of the least rode trains in the nation. Maybe if there was a daily Sunset Limited, then that would go up. Only the Sunset Limited and the Cardinal are not daily.