The Grand Excursion was a promotional voyage by train and steamboat into the Upper Mississippi River valley, USA that first took place in June 1854. It marked the first railroad connection between the East Coast and the Mississippi River, and it included dignitaries such as former president Millard Fillmore. In 2004, 150 years later, the Grand Excursion route was retraced by both riverboats and a steam locomotive.

The original Chicago, Rock Island and Pacific Railroad was an American Class I railroad. It was also known as the Rock Island Line, or, in its final years, The Rock.