| Portet-sur-Garonne to Grevena | 1,055.39 mi (1,698.48 km) |
| Portet-sur-Garonne to Ialysos | 1,491.08 mi (2,399.66 km) |
| Portet-sur-Garonne to Ilion | 1,222.15 mi (1,966.86 km) |
| Portet-sur-Garonne to Ilioupoli | 1,227.56 mi (1,975.57 km) |
| Portet-sur-Garonne to Ioannina | 1,036.93 mi (1,668.77 km) |
| Portet-sur-Garonne to Irakleio | 1,380.40 mi (2,221.54 km) |
| Portet-sur-Garonne to Irakleio | 1,224.95 mi (1,971.36 km) |
| Portet-sur-Garonne to Kaisariani | 1,226.94 mi (1,974.56 km) |
| Portet-sur-Garonne to Kalamaria | 1,120.47 mi (1,803.23 km) |
| Portet-sur-Garonne to Kalamata | 1,175.74 mi (1,892.17 km) |
| Portet-sur-Garonne to Kallithea | 1,224.61 mi (1,970.81 km) |
| Portet-sur-Garonne to Kalymnos | 1,415.59 mi (2,278.18 km) |
| Portet-sur-Garonne to Kalyvia Thorikou | 1,238.74 mi (1,993.56 km) |
| Portet-sur-Garonne to Kamatero | 1,221.97 mi (1,966.57 km) |
| Portet-sur-Garonne to Karditsa | 1,097.24 mi (1,765.83 km) |
