| Gelnhausen to Kastoria | 888.10 mi (1,429.26 km) |
| Gelnhausen to Katerini | 941.64 mi (1,515.43 km) |
| Gelnhausen to Keratsini | 1,104.53 mi (1,777.56 km) |
| Gelnhausen to Kerkyra | 898.54 mi (1,446.05 km) |
| Gelnhausen to Kiato | 1,075.12 mi (1,730.24 km) |
| Gelnhausen to Kifisia | 1,104.34 mi (1,777.27 km) |
| Gelnhausen to Kilkis | 916.14 mi (1,474.38 km) |
| Gelnhausen to Komotini | 1,001.92 mi (1,612.44 km) |
| Gelnhausen to Korinthos | 1,084.65 mi (1,745.58 km) |
| Gelnhausen to Koropi | 1,116.41 mi (1,796.69 km) |
| Gelnhausen to Korydallos | 1,104.65 mi (1,777.76 km) |
| Gelnhausen to Kos | 1,285.69 mi (2,069.12 km) |
| Gelnhausen to Kozani | 916.49 mi (1,474.95 km) |
| Gelnhausen to Lagos | 989.03 mi (1,591.68 km) |
| Gelnhausen to Lamia | 1,014.85 mi (1,633.25 km) |
