The Front Range refers to a mountain range of the Southern Rocky Mountains of North America located in the central portion of the U.S. State of Colorado, and southwestern portion of the U.S

The Front Range runs between Casper, Wyoming, and Pueblo, Colorado, and rises nearly 10,000 feet above the Great Plains. Longs Peak, Mount Blue Sky, and Pikes Peak are its most prominent peaks, visible from the Interstate 25 corridor.

The area is a popular destination for mountain biking, hiking, climbing, and camping during the warmer months and for skiing and snowboarding during winter.

The name “Front Range” is also applied to the Front Range urban corridor, the populated region of Colorado and Wyoming just east of the mountain range and extending from Cheyenne, Wyoming south to Pueblo, Colorado.

Colorado has 58 named peaks that rise above 14,000 feet in elevation
https://www.14ers.com/14ers

Arvada
Aurora
Boulder
Broomfield
Castle Rock
Centennial
Colorado Springs
Commerce City
Denver
Erie
Estes park
Fort Collins
Grand Junction
Greeley
Lakewood
Littleton
Longmont
Loveland
Northglenn
Parker
Pueblo
Thornton
Westminster