| Castellammare del Golfo to Impruneta | 400.01 mi (643.76 km) |
| Castellammare del Golfo to Induno Olona | 579.00 mi (931.80 km) |
| Castellammare del Golfo to Inverigo | 564.70 mi (908.80 km) |
| Castellammare del Golfo to Inveruno | 557.46 mi (897.14 km) |
| Castellammare del Golfo to Inzago | 547.28 mi (880.76 km) |
| Castellammare del Golfo to Iseo | 546.94 mi (880.22 km) |
| Castellammare del Golfo to Isernia | 257.41 mi (414.26 km) |
| Castellammare del Golfo to Isola Capo Rizzuto | 236.85 mi (381.17 km) |
| Castellammare del Golfo to Isola del Liri | 255.05 mi (410.47 km) |
| Castellammare del Golfo to Isola della Scala | 509.61 mi (820.15 km) |
| Castellammare del Golfo to Isola Vicentina | 530.70 mi (854.07 km) |
| Castellammare del Golfo to Ispica | 140.21 mi (225.65 km) |
| Castellammare del Golfo to Istrana | 530.56 mi (853.85 km) |
| Castellammare del Golfo to Itri | 227.69 mi (366.43 km) |
| Castellammare del Golfo to Ittiri | 291.14 mi (468.55 km) |
