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  3. Rocky Mountains

About 3,000 miles · MT, ID, WY, UT, CO, NM · highest Mount Elbert, 14,440 ft

Rocky Mountains map

The Rockies run about 3,000 miles from northern British Columbia to New Mexico. In the US they cross Montana, Idaho, Wyoming, Utah, Colorado and New Mexico and carry the Continental Divide.

Click a state
Press Streets to see the terrain. Look at the western half of Montana and Wyoming, all of Colorado west of Denver, northern New Mexico and the Idaho–Montana border.

Where the Rockies are

The Rocky Mountains are the eastern front of the North American Cordillera. They enter the US from Canada along the MontanaIdaho border, widen through Wyoming, reach their highest and broadest in Colorado, and fade out in New Mexico south of Santa Fe. The Wasatch and Uinta ranges of Utah are usually counted as well. On the map the Rockies are the reason the Great Plains end: driving west across Colorado the land climbs slowly to Denver at 5,280 ft and then rises 9,000 ft in the next 60 miles.

Main ranges by state

Key measurements

National parks

Glacier (Montana), Yellowstone and Grand Teton (Wyoming), Rocky Mountain and Great Sand Dunes (Colorado). Black Canyon of the Gunnison lies on the western edge of the Colorado Rockies. See the national parks map for all 63.

Cities on or near the range

Denver and Colorado Springs sit at the foot of the Front Range; Boulder, Fort Collins and Pueblo line the same edge. Salt Lake City lies beneath the Wasatch. Albuquerque and Santa Fe sit at the southern end. Helena, Missoula, Butte and Bozeman in Montana, and Jackson and Cheyenne (on the plains edge) in Wyoming, are the other main towns. Boise is on the western fringe.

How the range shaped the map

The Continental Divide follows the Rocky crest and was used as the Idaho–Montana border from the Canadian line south to the Yellowstone area. Otherwise the western states were drawn as rectangles on latitude and longitude, so Colorado and Wyoming simply cut across the ranges. The mountains did decide where people live: the string of cities along the Front Range from Cheyenne to Pueblo follows the line where the plains meet the peaks, and the Wasatch Front holds most of Utah's population.

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