| Gourock to Imola | 1,079.90 mi (1,737.93 km) |
| Gourock to Impruneta | 1,104.37 mi (1,777.32 km) |
| Gourock to Induno Olona | 913.81 mi (1,470.64 km) |
| Gourock to Inverigo | 931.09 mi (1,498.45 km) |
| Gourock to Inveruno | 933.16 mi (1,501.78 km) |
| Gourock to Inzago | 949.83 mi (1,528.60 km) |
| Gourock to Iseo | 959.12 mi (1,543.56 km) |
| Gourock to Isernia | 1,308.72 mi (2,106.18 km) |
| Gourock to Isola Capo Rizzuto | 1,544.24 mi (2,485.21 km) |
| Gourock to Isola del Liri | 1,285.10 mi (2,068.17 km) |
| Gourock to Isola della Scala | 1,008.54 mi (1,623.09 km) |
| Gourock to Isola Vicentina | 1,001.84 mi (1,612.31 km) |
| Gourock to Ispica | 1,611.78 mi (2,593.91 km) |
| Gourock to Istrana | 1,019.05 mi (1,640.00 km) |
| Gourock to Itri | 1,306.86 mi (2,103.18 km) |
