By train
By train
Amtrak (http://www.amtrak.com) runs the California Zephyr (http://www.amtrak.com/ser...) from Emeryville to Chicago, stopping in Denver, Fort Morgan, Winter Park, Granby, Glenwood Springs, and Grand Junction.
Through the Eastern Plains, Amtrak runs the Southwest Chief (http://www.amtrak.com/ser...): from Chicago to Los Angeles, stopping in Lamar, La Junta, and Trinidad.
For more information, see Wikitravel's article Rail travel in the United States.
By plane
By plane
All major airlines fly into Denver International Airport code: DEN as it is the major hub for the region, and in fact the ninth busiest airport in the world.
Here are some of the airports servicing Colorado:
| CITY | IATA | ICAO | AIRPORT |
| Aspen | ASE | KASE | Aspen-Pitkin County Airport Sardy Field |
| Colorado Springs | COS | KCOS | City of Colorado Springs Municipal Airport |
| Cortez | CEZ | KCEZ | Cortez Municipal Airport |
| Denver | DEN | KDEN | Denver International Airport |
| Durango | DRO | KDRO | Durango-La Plata County Airport |
| Eagle | EGE | KEGE | Eagle County Regional Airport |
| Fort Collins / Loveland | FNL | KFNL | Fort Collins-Loveland Municipal Airport |
| Grand Junction | GJT | KGJT | Grand Junction Regional Airport Walker Field |
| Gunnison | GUC | KGUC | Gunnison-Crested Butte Regional Airport |
| Hayden | HDN | KHDN | Yampa Valley Airport Yampa Valley Regional |
| Montrose | MTJ | KMTJ | Montrose Regional Airport |
| Telluride | TEX | KTEX | Telluride Regional Airport |