The Rocky Mountains are notable for containing the highest peaks in central North America. The range's highest peak is Mount Elbert located in Colorado at 14,440 feet (4,401 m) above sea level. Mount Robson in British Columbia, at 12,972 feet (3,954 m), is the highest peak in the Canadian Rockies. The Rocky Mountains are also the longest mountain range in the U.S.
The Cascades are part of the Pacific Ocean's Ring of Fire, the ring of volcanoes and associated mountains around the Pacific Ocean. All of the eruptions in the contiguous United States over the last 200 years have been from Cascade volcanoes. They can be located in Organ, Washington state and California.
The Appalachian Mountains, often called the Appalachians, are a system of mountains in eastern North America. The elevation of the Appalachian Mountains is 6,683' The area is 737,000 sq miles.
The Pacific Coast Ranges (officially gazetted as the Pacific Mountain System in the United States but referred to as the Pacific Coast Ranges), are the series of mountain ranges that stretch along the West Coast of North America from Alaska south to Northern and Central Mexico.
This range is located between the Coast Range and the Rocky Mountains. Sierra Nevada is mainly in Nevada.