| Potomac to Kingsville (Texas) | 1,428.91 mi (2,299.61 km) |
| Potomac to Kinston (North Carolina) | 259.30 mi (417.31 km) |
| Potomac to Kirkland (Washington) | 2,304.50 mi (3,708.73 km) |
| Potomac to Kirksville (Missouri) | 821.80 mi (1,322.56 km) |
| Potomac to Kirkwood (Missouri) | 712.22 mi (1,146.21 km) |
| Potomac to Kiryas Joel (New York) | 226.68 mi (364.80 km) |
| Potomac to Kissimmee (Florida) | 778.55 mi (1,252.96 km) |
| Potomac to Klamath Falls (Oregon) | 2,321.95 mi (3,736.83 km) |
| Potomac to Knightdale (North Carolina) | 233.87 mi (376.38 km) |
| Potomac to Knik-Fairview (Alaska) | 3,337.62 mi (5,371.39 km) |
| Potomac to Knoxville (Tennessee) | 425.75 mi (685.17 km) |
| Potomac to Kokomo (Indiana) | 484.86 mi (780.31 km) |
| Potomac to Kuna (Idaho) | 2,040.38 mi (3,283.68 km) |
| Potomac to Kyle (Texas) | 1,328.39 mi (2,137.84 km) |
| Potomac to La Cañada Flintridge (California) | 2,278.93 mi (3,667.58 km) |
