| Grangemouth to Imola | 1,051.11 mi (1,691.60 km) |
| Grangemouth to Impruneta | 1,076.95 mi (1,733.19 km) |
| Grangemouth to Induno Olona | 886.90 mi (1,427.33 km) |
| Grangemouth to Inverigo | 903.79 mi (1,454.51 km) |
| Grangemouth to Inveruno | 906.70 mi (1,459.20 km) |
| Grangemouth to Inzago | 922.43 mi (1,484.50 km) |
| Grangemouth to Iseo | 930.76 mi (1,497.92 km) |
| Grangemouth to Isernia | 1,280.00 mi (2,059.96 km) |
| Grangemouth to Isola Capo Rizzuto | 1,514.92 mi (2,438.03 km) |
| Grangemouth to Isola del Liri | 1,257.03 mi (2,023.00 km) |
| Grangemouth to Isola della Scala | 979.47 mi (1,576.30 km) |
| Grangemouth to Isola Vicentina | 971.76 mi (1,563.90 km) |
| Grangemouth to Ispica | 1,586.32 mi (2,552.93 km) |
| Grangemouth to Istrana | 988.15 mi (1,590.28 km) |
| Grangemouth to Itri | 1,279.21 mi (2,058.69 km) |
