Mountains in the west of North America?

The largest mountain system in North America is the Cordillera Mountains, but they also have a smaller satellite, the Rocky Mountains, they also stretch parallel to the western coastline and the Cordillera, respectively. It is generally accepted that the latter pass through two continents at once, that is, through North and South America, in total their length is approximately equal to 18 thousand kilometers, and the width in North America fluctuates around the figure of one and a half thousand kilometers. The height of the mountains is also quite impressive. The highest peak in North America rises 6190 meters above sea level.