Number of Miles 2547 California - 157 miles Arizona - 359.22 miles New Mexico - 368 miles Texas - 177 miles Oklahoma - 330 miles Arkansas - 284 miles Tennessee - 452 miles North Carolina - 420 miles Major Cities Along the Route Barstow, California Flagstaff, Arizona Albuquerque, New Mexico Amarillo, Texas Oklahoma City, Oklahoma Little Rock, Arkansas Memphis, Tennessee Nashville, Tennessee Knoxville, Tennessee Asheville, North Carolina Winston-Salem, North Carolina Greensboro, North Carolina Raleigh, North Carolina Wilmington, North Carolina Intersections with other Interstates Interstate 15 in Barstow, California Interstate 17 in Flagstaff, Arizona Interstate 25 in Albuquerque, New Mexico Interstate 27 in Amarillo, Texas Interstate 44 in Oklahoma City, Oklahoma Interstate 35 in Oklahoma City, Oklahoma Interstate 30 in Little Rock, Arkansas Interstate 55 in Memphis, Tennessee Interstate 24 in Nashville, Tennessee Interstate 65 in Nashville, Tennessee Interstate 75 near Pine Top, Tennessee. They stay merged until Knoxville, Tennessee. Interstate 81 near Dandridge, Tennessee Interstate 26 in Asheville, North Carolina Interstate 77 in Statesville, North Carolina Interstate 73 in Greensboro, North Carolina Interstate 85 in Greensboro, North Carolina. They stay merged until Durham, North Carolina. Interstate 95 in Benson, North Carolina Spur Routes I-240 - Oklahoma City, Oklahoma I-540 - Spurs to Fort Smith, Arkansas and Bentonville, Arkansas I-440 - Little Rock, Arkansas I-240 - Memphis, Tennessee I-440 - Nashville, Tennessee I-140 - Farragut, Tennessee I-640 - Knoxville, Tennessee I-240 - Asheville, North Carolina I-840 - Greensboro, North Carolina I-540 - Raleigh, North Carolina I-140 - Wilmington, North Carolina Notes At each end of I-40 there is a sign giving the distance to the other end. The Government of California has submitted Highway 58 between Barstow, California and Bakersfield, California for I-40 extension potential. Future Interstate 840 around Nashville, Tennessee was once planned to completely surround the city. But in October 2003, Tennessee DOT discontinued plans for a northern loop around the city. Currently the Highway is signed as Tennessee 840.