| Duluth to Imola | 4,623.18 mi (7,440.28 km) |
| Duluth to Impruneta | 4,638.46 mi (7,464.88 km) |
| Duluth to Induno Olona | 4,449.80 mi (7,161.26 km) |
| Duluth to Inverigo | 4,468.93 mi (7,192.05 km) |
| Duluth to Inveruno | 4,465.77 mi (7,186.96 km) |
| Duluth to Inzago | 4,487.76 mi (7,222.34 km) |
| Duluth to Iseo | 4,502.30 mi (7,245.75 km) |
| Duluth to Isernia | 4,847.55 mi (7,801.37 km) |
| Duluth to Isola Capo Rizzuto | 5,083.69 mi (8,181.41 km) |
| Duluth to Isola del Liri | 4,819.65 mi (7,756.47 km) |
| Duluth to Isola della Scala | 4,554.62 mi (7,329.95 km) |
| Duluth to Isola Vicentina | 4,552.96 mi (7,327.28 km) |
| Duluth to Ispica | 5,113.07 mi (8,228.69 km) |
| Duluth to Istrana | 4,573.42 mi (7,360.21 km) |
| Duluth to Itri | 4,837.70 mi (7,785.52 km) |
