Interstate 25 in the context of "Interstate 10"

The Front Range Urban Corridor is an oblong region of urban population located along the eastern face of the Southern Rocky Mountains, encompassing 18 counties in the US states of Colorado and Wyoming. The corridor derives its name from the Front Range, the mountain range that defines the western boundary of the corridor which serves as a gateway to the Rocky Mountains. The region comprises the northern portion of the Southern Rocky Mountain Front geographic area, which in turn comprises the southern portion of the Rocky Mountain Front geographic area of Canada and the United States. The Front Range Urban Corridor had a population of 5,055,344 at the 2020 census, an increase of +16.65% since the 2010 census, and an estimated population of 5,226,455 as of 2024 census estimates.

The corridor contains some of the West's largest cities, such as Denver and Colorado Springs. It also contains smaller cities such as Pueblo and Cheyenne. Its main transportation corridor is Interstate 25. There have been many proposals for Front Range Passenger Rail. None have come to fruition as of 2021, though plans are under development.

The Front Range is a mountain range of the Southern Rocky Mountains of North America located in the central portion of the U.S. State of Colorado, and southeastern portion of the U.S. State of Wyoming. It is the first mountain range encountered as one goes westbound along the 40th parallel north across the Great Plains of North America.

The Front Range runs north-south 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. Millions of years ago, the present-day Front Range was home to ancient mountain ranges, deserts, beaches, and even oceans.

Front Range Passenger Rail is a proposed intercity passenger train service along the Front Range and broader I-25 corridors in Colorado and Wyoming. Most proposals envision a route from Pueblo north to Colorado Springs, Denver, Boulder, and Fort Collins. Extensions north to Cheyenne and south to Trinidad, Albuquerque, and even El Paso have been discussed.

Front Range communities were historically connected by rail transit until the mid-20th century. A series of studies performed since the early 2000s have shown mounting interest in renewed service. In the 2020s, Colorado created a taxing district to fund a new passenger-rail effort, while Amtrak included the route in its expansion vision.