| Castleton to Imola | 893.74 mi (1,438.34 km) |
| Castleton to Impruneta | 915.81 mi (1,473.86 km) |
| Castleton to Induno Olona | 724.89 mi (1,166.59 km) |
| Castleton to Inverigo | 742.73 mi (1,195.31 km) |
| Castleton to Inveruno | 743.54 mi (1,196.61 km) |
| Castleton to Inzago | 761.57 mi (1,225.63 km) |
| Castleton to Iseo | 772.49 mi (1,243.21 km) |
| Castleton to Isernia | 1,122.00 mi (1,805.68 km) |
| Castleton to Isola Capo Rizzuto | 1,358.29 mi (2,185.96 km) |
| Castleton to Isola del Liri | 1,097.28 mi (1,765.90 km) |
| Castleton to Isola della Scala | 823.14 mi (1,324.71 km) |
| Castleton to Isola Vicentina | 818.66 mi (1,317.50 km) |
| Castleton to Ispica | 1,420.26 mi (2,285.69 km) |
| Castleton to Istrana | 837.78 mi (1,348.27 km) |
| Castleton to Itri | 1,118.33 mi (1,799.78 km) |
