| Gravelines to Impruneta | 660.12 mi (1,062.36 km) |
| Gravelines to Induno Olona | 469.19 mi (755.09 km) |
| Gravelines to Inverigo | 487.06 mi (783.85 km) |
| Gravelines to Inveruno | 487.92 mi (785.24 km) |
| Gravelines to Inzago | 505.91 mi (814.18 km) |
| Gravelines to Iseo | 517.24 mi (832.42 km) |
| Gravelines to Isernia | 866.52 mi (1,394.52 km) |
| Gravelines to Isola Capo Rizzuto | 1,102.95 mi (1,775.02 km) |
| Gravelines to Isola del Liri | 841.61 mi (1,354.45 km) |
| Gravelines to Isola della Scala | 568.36 mi (914.68 km) |
| Gravelines to Isola Vicentina | 565.21 mi (909.62 km) |
| Gravelines to Ispica | 1,165.73 mi (1,876.06 km) |
| Gravelines to Istrana | 585.71 mi (942.61 km) |
| Gravelines to Itri | 862.64 mi (1,388.28 km) |
| Gravelines to Ittiri | 781.07 mi (1,257.01 km) |
