| Gretna to Imola | 5,331.36 mi (8,580.00 km) |
| Gretna to Impruneta | 5,333.99 mi (8,584.22 km) |
| Gretna to Induno Olona | 5,158.56 mi (8,301.90 km) |
| Gretna to Inverigo | 5,178.67 mi (8,334.26 km) |
| Gretna to Inveruno | 5,169.88 mi (8,320.12 km) |
| Gretna to Inzago | 5,196.50 mi (8,362.96 km) |
| Gretna to Iseo | 5,216.77 mi (8,395.58 km) |
| Gretna to Isernia | 5,537.79 mi (8,912.22 km) |
| Gretna to Isola Capo Rizzuto | 5,762.91 mi (9,274.50 km) |
| Gretna to Isola del Liri | 5,505.62 mi (8,860.44 km) |
| Gretna to Isola della Scala | 5,270.37 mi (8,481.84 km) |
| Gretna to Isola Vicentina | 5,276.81 mi (8,492.21 km) |
| Gretna to Ispica | 5,744.32 mi (9,244.59 km) |
| Gretna to Istrana | 5,302.50 mi (8,533.56 km) |
| Gretna to Itri | 5,518.02 mi (8,880.39 km) |
