| Gladbeck to Grevena | 1,051.65 mi (1,692.48 km) |
| Gladbeck to Ialysos | 1,474.37 mi (2,372.77 km) |
| Gladbeck to Ilion | 1,237.97 mi (1,992.32 km) |
| Gladbeck to Ilioupoli | 1,245.17 mi (2,003.91 km) |
| Gladbeck to Ioannina | 1,057.77 mi (1,702.32 km) |
| Gladbeck to Irakleio | 1,436.46 mi (2,311.75 km) |
| Gladbeck to Irakleio | 1,239.14 mi (1,994.21 km) |
| Gladbeck to Kaisariani | 1,243.47 mi (2,001.17 km) |
| Gladbeck to Kalamaria | 1,073.87 mi (1,728.23 km) |
| Gladbeck to Kalamata | 1,247.10 mi (2,007.02 km) |
| Gladbeck to Kallithea | 1,242.65 mi (1,999.86 km) |
| Gladbeck to Kalymnos | 1,403.44 mi (2,258.62 km) |
| Gladbeck to Kalyvia Thorikou | 1,256.08 mi (2,021.46 km) |
| Gladbeck to Kamatero | 1,236.86 mi (1,990.54 km) |
| Gladbeck to Karditsa | 1,107.10 mi (1,781.71 km) |
