| Marinha Grande to Imola | 1,102.63 mi (1,774.52 km) |
| Marinha Grande to Impruneta | 1,072.84 mi (1,726.57 km) |
| Marinha Grande to Induno Olona | 991.53 mi (1,595.71 km) |
| Marinha Grande to Inverigo | 1,006.53 mi (1,619.86 km) |
| Marinha Grande to Inveruno | 985.11 mi (1,585.38 km) |
| Marinha Grande to Inzago | 1,014.75 mi (1,633.08 km) |
| Marinha Grande to Iseo | 1,043.64 mi (1,679.58 km) |
| Marinha Grande to Isernia | 1,217.31 mi (1,959.07 km) |
| Marinha Grande to Isola Capo Rizzuto | 1,386.79 mi (2,231.82 km) |
| Marinha Grande to Isola del Liri | 1,182.76 mi (1,903.47 km) |
| Marinha Grande to Isola della Scala | 1,081.53 mi (1,740.55 km) |
| Marinha Grande to Isola Vicentina | 1,108.25 mi (1,783.56 km) |
| Marinha Grande to Ispica | 1,305.07 mi (2,100.31 km) |
| Marinha Grande to Istrana | 1,139.55 mi (1,833.93 km) |
| Marinha Grande to Itri | 1,181.51 mi (1,901.45 km) |
