| Portimao to Imola | 1,167.37 mi (1,878.70 km) |
| Portimao to Impruneta | 1,131.40 mi (1,820.82 km) |
| Portimao to Induno Olona | 1,078.30 mi (1,735.36 km) |
| Portimao to Inverigo | 1,091.03 mi (1,755.85 km) |
| Portimao to Inveruno | 1,068.48 mi (1,719.55 km) |
| Portimao to Inzago | 1,096.51 mi (1,764.66 km) |
| Portimao to Iseo | 1,125.13 mi (1,810.73 km) |
| Portimao to Isernia | 1,251.12 mi (2,013.48 km) |
| Portimao to Isola Capo Rizzuto | 1,395.81 mi (2,246.34 km) |
| Portimao to Isola del Liri | 1,217.62 mi (1,959.57 km) |
| Portimao to Isola della Scala | 1,156.88 mi (1,861.82 km) |
| Portimao to Isola Vicentina | 1,186.15 mi (1,908.93 km) |
| Portimao to Ispica | 1,290.94 mi (2,077.57 km) |
| Portimao to Istrana | 1,216.53 mi (1,957.81 km) |
| Portimao to Itri | 1,212.24 mi (1,950.91 km) |
