| Castle Rock to Imola | 5,436.26 mi (8,748.82 km) |
| Castle Rock to Impruneta | 5,452.72 mi (8,775.30 km) |
| Castle Rock to Induno Olona | 5,263.42 mi (8,470.66 km) |
| Castle Rock to Inverigo | 5,282.39 mi (8,501.19 km) |
| Castle Rock to Inveruno | 5,279.79 mi (8,497.00 km) |
| Castle Rock to Inzago | 5,301.25 mi (8,531.54 km) |
| Castle Rock to Iseo | 5,315.16 mi (8,553.92 km) |
| Castle Rock to Isernia | 5,661.65 mi (9,111.55 km) |
| Castle Rock to Isola Capo Rizzuto | 5,898.09 mi (9,492.06 km) |
| Castle Rock to Isola del Liri | 5,634.21 mi (9,067.39 km) |
| Castle Rock to Isola della Scala | 5,367.14 mi (8,637.58 km) |
| Castle Rock to Isola Vicentina | 5,364.58 mi (8,633.45 km) |
| Castle Rock to Ispica | 5,930.58 mi (9,544.35 km) |
| Castle Rock to Istrana | 5,384.33 mi (8,665.24 km) |
| Castle Rock to Itri | 5,652.69 mi (9,097.13 km) |
