| Portchester to Imola | 745.67 mi (1,200.05 km) |
| Portchester to Impruneta | 760.52 mi (1,223.94 km) |
| Portchester to Induno Olona | 571.80 mi (920.22 km) |
| Portchester to Inverigo | 591.08 mi (951.24 km) |
| Portchester to Inveruno | 587.67 mi (945.76 km) |
| Portchester to Inzago | 609.85 mi (981.46 km) |
| Portchester to Iseo | 625.47 mi (1,006.59 km) |
| Portchester to Isernia | 969.51 mi (1,560.27 km) |
| Portchester to Isola Capo Rizzuto | 1,205.89 mi (1,940.69 km) |
| Portchester to Isola del Liri | 942.07 mi (1,516.12 km) |
| Portchester to Isola della Scala | 678.45 mi (1,091.86 km) |
| Portchester to Isola Vicentina | 679.92 mi (1,094.22 km) |
| Portchester to Ispica | 1,251.97 mi (2,014.85 km) |
| Portchester to Istrana | 703.34 mi (1,131.92 km) |
| Portchester to Itri | 960.96 mi (1,546.52 km) |
