There are several transportation options for those who are traveling to Durham, and for getting around once they have arrived. I-85 and I-40 are the two major interstates that lead in and out of the city. The other major highways are US Highways 15-501 and 70. All of the major roads help to connect Durham to the rest of the state and the country. In fact, most of the population in the United States live within one day’s drive to the city, or within a two-hour flight. Raleigh-Durham International Airport serves Durham and the rest of the Triangle Area.