| Cologne to Grevena | 1,022.72 mi (1,645.91 km) |
| Cologne to Ialysos | 1,449.08 mi (2,332.07 km) |
| Cologne to Ilion | 1,209.41 mi (1,946.35 km) |
| Cologne to Ilioupoli | 1,216.56 mi (1,957.87 km) |
| Cologne to Ioannina | 1,027.54 mi (1,653.66 km) |
| Cologne to Irakleio | 1,406.85 mi (2,264.11 km) |
| Cologne to Irakleio | 1,210.68 mi (1,948.41 km) |
| Cologne to Kaisariani | 1,214.91 mi (1,955.20 km) |
| Cologne to Kalamaria | 1,047.67 mi (1,686.06 km) |
| Cologne to Kalamata | 1,215.65 mi (1,956.41 km) |
| Cologne to Kallithea | 1,214.00 mi (1,953.75 km) |
| Cologne to Kalymnos | 1,377.50 mi (2,216.88 km) |
| Cologne to Kalyvia Thorikou | 1,227.55 mi (1,975.56 km) |
| Cologne to Kamatero | 1,208.35 mi (1,944.65 km) |
| Cologne to Karditsa | 1,077.89 mi (1,734.70 km) |
