| Portici to Imola | 278.26 mi (447.82 km) |
| Portici to Impruneta | 253.21 mi (407.51 km) |
| Portici to Induno Olona | 444.08 mi (714.68 km) |
| Portici to Inverigo | 426.07 mi (685.70 km) |
| Portici to Inveruno | 426.27 mi (686.02 km) |
| Portici to Inzago | 407.23 mi (655.37 km) |
| Portici to Iseo | 397.80 mi (640.19 km) |
| Portici to Isernia | 54.36 mi (87.49 km) |
| Portici to Isola Capo Rizzuto | 194.54 mi (313.08 km) |
| Portici to Isola del Liri | 71.56 mi (115.17 km) |
| Portici to Isola della Scala | 350.34 mi (563.82 km) |
| Portici to Isola Vicentina | 362.98 mi (584.16 km) |
| Portici to Ispica | 280.51 mi (451.43 km) |
| Portici to Istrana | 354.42 mi (570.39 km) |
| Portici to Itri | 52.89 mi (85.12 km) |
