| Portes-les-Valence to Impruneta | 325.73 mi (524.22 km) |
| Portes-les-Valence to Induno Olona | 203.58 mi (327.63 km) |
| Portes-les-Valence to Inverigo | 219.10 mi (352.61 km) |
| Portes-les-Valence to Inveruno | 198.49 mi (319.44 km) |
| Portes-les-Valence to Inzago | 228.83 mi (368.27 km) |
| Portes-les-Valence to Iseo | 257.49 mi (414.39 km) |
| Portes-les-Valence to Isernia | 522.24 mi (840.47 km) |
| Portes-les-Valence to Isola Capo Rizzuto | 748.20 mi (1,204.11 km) |
| Portes-les-Valence to Isola del Liri | 489.61 mi (787.95 km) |
| Portes-les-Valence to Isola della Scala | 300.50 mi (483.61 km) |
| Portes-les-Valence to Isola Vicentina | 323.93 mi (521.31 km) |
| Portes-les-Valence to Ispica | 765.04 mi (1,231.21 km) |
| Portes-les-Valence to Istrana | 355.50 mi (572.13 km) |
| Portes-les-Valence to Itri | 502.00 mi (807.89 km) |
| Portes-les-Valence to Ittiri | 349.55 mi (562.54 km) |
