Blue Ridge, Rocky Mountain ranges
In the 48 contiguous states the four major ranges are: Rockies Appalachians Sierras Cascades
The Sierra Nevada Mountain range and Cascade mountains
The Rockies, The Appalachians, and I'm not sure of a third
rockies and cascadas
there are no mountain ranges in the US that start with I.
The Rocky Mountains and the Cascades are the two mountain ranges found in both the US and Canada.
Some of the mountain ranges in the eastern United States include the Appalachian Mountains, the Adirondack Mountains, the White Mountains, and the Blue Ridge Mountains.
The fact is, there are many mountain ranges within the United States, however the four below are the ones that come to my mind. Appalachian Mountains Rocky mountains Ozark Mountains Cascade Mountain Range
The Rocky Mountains and the Appalachian Mountains are two prominent mountain ranges in the United States. The Rocky Mountains stretch from Canada to New Mexico, while the Appalachian Mountains run from Georgia to Maine.
Four mountain ranges found in the United States are Rockies, Blue Ridge, Smoky Mountains, and Alleghenies.
Two western mountain ranges in the US are the Rocky Mountains and the Sierra Nevada Mountains.