| Box Elder to Kinston (North Carolina) | 1,478.31 mi (2,379.12 km) |
| Box Elder to Kirkland (Washington) | 949.49 mi (1,528.06 km) |
| Box Elder to Kirksville (Missouri) | 601.64 mi (968.24 km) |
| Box Elder to Kirkwood (Missouri) | 758.70 mi (1,221.00 km) |
| Box Elder to Kiryas Joel (New York) | 1,472.34 mi (2,369.51 km) |
| Box Elder to Kissimmee (Florida) | 1,619.07 mi (2,605.64 km) |
| Box Elder to Klamath Falls (Oregon) | 949.00 mi (1,527.26 km) |
| Box Elder to Knightdale (North Carolina) | 1,416.38 mi (2,279.44 km) |
| Box Elder to Knik-Fairview (Alaska) | 2,216.32 mi (3,566.82 km) |
| Box Elder to Knoxville (Tennessee) | 1,153.87 mi (1,856.97 km) |
| Box Elder to Kokomo (Indiana) | 900.62 mi (1,449.41 km) |
| Box Elder to Kuna (Idaho) | 664.50 mi (1,069.41 km) |
| Box Elder to Kyle (Texas) | 1,016.16 mi (1,635.36 km) |
| Box Elder to La Cañada Flintridge (California) | 1,057.21 mi (1,701.42 km) |
| Box Elder to La Crescenta-Montrose (California) | 1,057.54 mi (1,701.95 km) |
