| Douglas to Impruneta | 1,069.92 mi (1,721.86 km) |
| Douglas to Induno Olona | 885.47 mi (1,425.03 km) |
| Douglas to Inverigo | 905.27 mi (1,456.90 km) |
| Douglas to Inveruno | 899.30 mi (1,447.29 km) |
| Douglas to Inzago | 923.72 mi (1,486.58 km) |
| Douglas to Iseo | 941.62 mi (1,515.40 km) |
| Douglas to Isernia | 1,278.72 mi (2,057.90 km) |
| Douglas to Isola Capo Rizzuto | 1,513.37 mi (2,435.53 km) |
| Douglas to Isola del Liri | 1,249.46 mi (2,010.82 km) |
| Douglas to Isola della Scala | 995.12 mi (1,601.49 km) |
| Douglas to Isola Vicentina | 998.98 mi (1,607.71 km) |
| Douglas to Ispica | 1,542.37 mi (2,482.20 km) |
| Douglas to Istrana | 1,023.62 mi (1,647.36 km) |
| Douglas to Itri | 1,266.36 mi (2,038.01 km) |
| Douglas to Ittiri | 1,120.53 mi (1,803.33 km) |
