| Potomac to Kennewick (Washington) | 2,165.02 mi (3,484.27 km) |
| Potomac to Kenosha (Wisconsin) | 610.26 mi (982.12 km) |
| Potomac to Kent (Ohio) | 265.05 mi (426.56 km) |
| Potomac to Kent (Washington) | 2,305.59 mi (3,710.49 km) |
| Potomac to Kentwood (Michigan) | 513.06 mi (825.69 km) |
| Potomac to Kerman (California) | 2,321.88 mi (3,736.71 km) |
| Potomac to Kernersville (North Carolina) | 255.73 mi (411.55 km) |
| Potomac to Kerrville (Texas) | 1,389.24 mi (2,235.76 km) |
| Potomac to Kettering (Maryland) | 23.44 mi (37.72 km) |
| Potomac to Kettering (Ohio) | 374.45 mi (602.62 km) |
| Potomac to Kewanee (Illinois) | 689.30 mi (1,109.32 km) |
| Potomac to Key Biscayne (Florida) | 936.58 mi (1,507.28 km) |
| Potomac to Key Largo (Florida) | 977.94 mi (1,573.85 km) |
| Potomac to Key West (Florida) | 1,033.63 mi (1,663.47 km) |
| Potomac to Keystone (Florida) | 813.35 mi (1,308.97 km) |
