| Gelnhausen to Grevena | 917.08 mi (1,475.90 km) |
| Gelnhausen to Ialysos | 1,340.81 mi (2,157.83 km) |
| Gelnhausen to Ilion | 1,103.42 mi (1,775.79 km) |
| Gelnhausen to Ilioupoli | 1,110.62 mi (1,787.38 km) |
| Gelnhausen to Ioannina | 923.28 mi (1,485.88 km) |
| Gelnhausen to Irakleio | 1,301.89 mi (2,095.18 km) |
| Gelnhausen to Irakleio | 1,104.61 mi (1,777.70 km) |
| Gelnhausen to Kaisariani | 1,108.92 mi (1,784.64 km) |
| Gelnhausen to Kalamaria | 939.88 mi (1,512.59 km) |
| Gelnhausen to Kalamata | 1,112.89 mi (1,791.03 km) |
| Gelnhausen to Kallithea | 1,108.10 mi (1,783.32 km) |
| Gelnhausen to Kalymnos | 1,269.59 mi (2,043.21 km) |
| Gelnhausen to Kalyvia Thorikou | 1,121.54 mi (1,804.94 km) |
| Gelnhausen to Kamatero | 1,102.32 mi (1,774.02 km) |
| Gelnhausen to Karditsa | 972.53 mi (1,565.13 km) |
