Two western mountain ranges in the US are the Rocky Mountains and the Sierra Nevada Mountains.
sierra Nevada, continental divide
The Western United States contains some very rugged territory in the form of several large mountain ranges. These include the Cascades, the Sierras, and the Rockies.
rockies and cascadas
They are the Rocky Mountains in the West and the Appalachian Mountains in the East.
There are Hundreds, if not Thousands of actual named mountains in the US. Two great mountain ranges, The rockies in the western US, and the Appalachian mountains in the eastern US, are composed of smaller ranges themselves.
sierra Nevada, continental divide
Three mountain ranges in the western region of the US are the Rocky Mountains, the Sierra Nevada, and the Cascade Range.
The Rocky Mountains and the Cascades are the two mountain ranges found in both the US and Canada.
Most of the mountain ranges in the US are located in the western half, including the Rocky Mountains, Sierra Nevada, Cascades, and Coast Range.
Blue Ridge, Rocky Mountain ranges
Major mountain ranges listed below; there are hundreds of smaller ranges all over the US and Canada; particularly in Alaska Western United States: Sierra Nevada, Rocky Mountains, Black Hills, Eastern United States: Ozarks, Appalachians