| Colonia to Isny im Allgau | 4,000.11 mi (6,437.55 km) |
| Colonia to Isselburg | 3,736.13 mi (6,012.72 km) |
| Colonia to Issum | 3,742.14 mi (6,022.40 km) |
| Colonia to Itzehoe | 3,798.30 mi (6,112.77 km) |
| Colonia to Jena | 3,963.17 mi (6,378.11 km) |
| Colonia to Jever | 3,746.49 mi (6,029.39 km) |
| Colonia to Jork | 3,815.05 mi (6,139.73 km) |
| Colonia to Juchen | 3,756.87 mi (6,046.10 km) |
| Colonia to Julich | 3,755.90 mi (6,044.54 km) |
| Colonia to Juterbog | 3,988.31 mi (6,418.57 km) |
| Colonia to Kaarst | 3,758.38 mi (6,048.53 km) |
| Colonia to Kaiserslautern | 3,854.04 mi (6,202.48 km) |
| Colonia to Kalkar | 3,731.70 mi (6,005.59 km) |
| Colonia to Kall | 3,773.65 mi (6,073.10 km) |
| Colonia to Kaltenkirchen | 3,817.24 mi (6,143.26 km) |
