| Gronau to Grevena | 1,080.49 mi (1,738.88 km) |
| Gronau to Ialysos | 1,499.11 mi (2,412.58 km) |
| Gronau to Ilion | 1,266.25 mi (2,037.83 km) |
| Gronau to Ilioupoli | 1,273.50 mi (2,049.50 km) |
| Gronau to Ioannina | 1,087.94 mi (1,750.86 km) |
| Gronau to Irakleio | 1,465.69 mi (2,358.80 km) |
| Gronau to Irakleio | 1,267.32 mi (2,039.56 km) |
| Gronau to Kaisariani | 1,271.75 mi (2,046.68 km) |
| Gronau to Kalamaria | 1,099.89 mi (1,770.11 km) |
| Gronau to Kalamata | 1,278.36 mi (2,057.33 km) |
| Gronau to Kallithea | 1,271.03 mi (2,045.52 km) |
| Gronau to Kalymnos | 1,428.89 mi (2,299.58 km) |
| Gronau to Kalyvia Thorikou | 1,284.31 mi (2,066.89 km) |
| Gronau to Kamatero | 1,265.10 mi (2,035.98 km) |
| Gronau to Karditsa | 1,136.17 mi (1,828.48 km) |
