| Potomac to Kamen | 3,976.44 mi (6,399.47 km) |
| Potomac to Kamenz | 4,236.07 mi (6,817.29 km) |
| Potomac to Kamp-Lintfort | 3,934.22 mi (6,331.52 km) |
| Potomac to Kandel | 4,069.46 mi (6,549.17 km) |
| Potomac to Kappeln | 3,978.67 mi (6,403.06 km) |
| Potomac to Karben | 4,058.80 mi (6,532.01 km) |
| Potomac to Karlsdorf-Neuthard | 4,081.95 mi (6,569.27 km) |
| Potomac to Karlsfeld | 4,229.63 mi (6,806.93 km) |
| Potomac to Karlsruhe | 4,080.00 mi (6,566.13 km) |
| Potomac to Kassel | 4,056.24 mi (6,527.88 km) |
| Potomac to Kaufbeuren | 4,205.74 mi (6,768.48 km) |
| Potomac to Kaufering | 4,210.01 mi (6,775.36 km) |
| Potomac to Kaufungen | 4,061.98 mi (6,537.12 km) |
| Potomac to Kehl | 4,068.93 mi (6,548.32 km) |
| Potomac to Kelheim | 4,223.49 mi (6,797.05 km) |
