The Rocky Mountains span across western North America, primarily within the United States and Canada.  

The Rocky Mountains, a majestic mountain range in western North America, extend through both the United States and Canada. They begin in the northern part of British Columbia, Canada, and stretch southward through several U.S. states, including Montana, Idaho, Wyoming, Colorado, and New Mexico. The Rockies form a significant part of the continental divide, separating eastward and westward flowing rivers. This vast mountain chain plays a crucial role in the geography and climate of both countries.