| Helensburgh to Imola | 1,080.31 mi (1,738.59 km) |
| Helensburgh to Impruneta | 1,105.01 mi (1,778.34 km) |
| Helensburgh to Induno Olona | 914.51 mi (1,471.77 km) |
| Helensburgh to Inverigo | 931.74 mi (1,499.48 km) |
| Helensburgh to Inveruno | 933.94 mi (1,503.03 km) |
| Helensburgh to Inzago | 950.46 mi (1,529.61 km) |
| Helensburgh to Iseo | 959.59 mi (1,544.32 km) |
| Helensburgh to Isernia | 1,309.15 mi (2,106.88 km) |
| Helensburgh to Isola Capo Rizzuto | 1,544.58 mi (2,485.76 km) |
| Helensburgh to Isola del Liri | 1,285.64 mi (2,069.03 km) |
| Helensburgh to Isola della Scala | 1,008.89 mi (1,623.66 km) |
| Helensburgh to Isola Vicentina | 1,002.03 mi (1,612.60 km) |
| Helensburgh to Ispica | 1,612.75 mi (2,595.47 km) |
| Helensburgh to Istrana | 1,019.08 mi (1,640.06 km) |
| Helensburgh to Itri | 1,307.47 mi (2,104.16 km) |
