You can drive to every state capital in the continental United States.

Juneau, Alaska is rather unusual among U.S. capitals in that there are no roads connecting the city to the rest of the state or to the rest of North America (although a ferry service is available for cars). The absence of a road network is due to the extremely rugged terrain surrounding the city. This in turn makes Juneau a de-facto island city in terms of transportation, since all goods coming in and out must go by plane or boat, in spite of the city being located on the Alaskan mainland. Downtown Juneau sits at sea level, with tides averaging 16 feet (5 m), below steep mountains about 3,500 feet (1,100 m) to 4,000 feet (1,200 m) high. Atop these mountains is the Juneau Icefield, a large ice mass from which about 30 glaciers flow; two of these, the Mendenhall Glacier and the Lemon Creek Glacier, are visible from the local road system.

The Continental United States is the area of the USA that is located in the continent of North America. It includes 49 of the 50 states (48 of which are located south of Canada and north of Mexico, known as the "lower 48 states", the other being Alaska) and the District of Columbia, which contains the federal capital, Washington, D.C. The only state which is not part of this is Hawaii (as they are islands in the Pacific Ocean and not part of North America).