| Colonia to Kamen | 3,789.91 mi (6,099.26 km) |
| Colonia to Kamenz | 4,050.24 mi (6,518.23 km) |
| Colonia to Kamp-Lintfort | 3,747.53 mi (6,031.07 km) |
| Colonia to Kandel | 3,882.16 mi (6,247.73 km) |
| Colonia to Kappeln | 3,794.10 mi (6,106.02 km) |
| Colonia to Karben | 3,871.88 mi (6,231.18 km) |
| Colonia to Karlsdorf-Neuthard | 3,894.69 mi (6,267.89 km) |
| Colonia to Karlsfeld | 4,042.37 mi (6,505.57 km) |
| Colonia to Karlsruhe | 3,892.70 mi (6,264.69 km) |
| Colonia to Kassel | 3,869.80 mi (6,227.83 km) |
| Colonia to Kaufbeuren | 4,018.34 mi (6,466.89 km) |
| Colonia to Kaufering | 4,022.68 mi (6,473.88 km) |
| Colonia to Kaufungen | 3,875.53 mi (6,237.07 km) |
| Colonia to Kehl | 3,881.49 mi (6,246.65 km) |
| Colonia to Kelheim | 4,036.46 mi (6,496.05 km) |
