| Portet-sur-Garonne to Impruneta | 492.36 mi (792.38 km) |
| Portet-sur-Garonne to Induno Olona | 398.53 mi (641.37 km) |
| Portet-sur-Garonne to Inverigo | 413.12 mi (664.86 km) |
| Portet-sur-Garonne to Inveruno | 391.58 mi (630.19 km) |
| Portet-sur-Garonne to Inzago | 421.21 mi (677.87 km) |
| Portet-sur-Garonne to Iseo | 450.10 mi (724.37 km) |
| Portet-sur-Garonne to Isernia | 665.71 mi (1,071.35 km) |
| Portet-sur-Garonne to Isola Capo Rizzuto | 872.29 mi (1,403.81 km) |
| Portet-sur-Garonne to Isola del Liri | 631.13 mi (1,015.70 km) |
| Portet-sur-Garonne to Isola della Scala | 488.96 mi (786.91 km) |
| Portet-sur-Garonne to Isola Vicentina | 514.99 mi (828.79 km) |
| Portet-sur-Garonne to Ispica | 849.58 mi (1,367.26 km) |
| Portet-sur-Garonne to Istrana | 546.38 mi (879.32 km) |
| Portet-sur-Garonne to Itri | 637.13 mi (1,025.36 km) |
| Portet-sur-Garonne to Ittiri | 418.93 mi (674.20 km) |
