Bus

Traveling by bus within the Denver–Boulder region is fairly easy with RTD, because the coverage of the area is dense and most routes are not too circuitous. The free 16th Street MallRide and the light-rail routes within Denver make travel to and from downtown attractions easy.

Bustang, an intercity coach service run by the Colorado Department of Transportation, connects Denver with cities across the state including Grand Junction, Colorado Springs, and Durango. It also serves the mountain corridor along I–70 to connect passengers with local bus services to ski resorts and lodging.

Mountain Metropolitan Transit serves the Colorado Springs area. Epic Mountain Express offers both shared-ride shuttles and private-car airport services from Denver International Airport and Eagle County Regional Airport.