| Castanet-Tolosan to Impruneta | 487.80 mi (785.04 km) |
| Castanet-Tolosan to Induno Olona | 394.60 mi (635.05 km) |
| Castanet-Tolosan to Inverigo | 409.11 mi (658.40 km) |
| Castanet-Tolosan to Inveruno | 387.52 mi (623.65 km) |
| Castanet-Tolosan to Inzago | 417.10 mi (671.26 km) |
| Castanet-Tolosan to Iseo | 446.00 mi (717.77 km) |
| Castanet-Tolosan to Isernia | 661.08 mi (1,063.91 km) |
| Castanet-Tolosan to Isola Capo Rizzuto | 867.73 mi (1,396.48 km) |
| Castanet-Tolosan to Isola del Liri | 626.50 mi (1,008.26 km) |
| Castanet-Tolosan to Isola della Scala | 484.71 mi (780.06 km) |
| Castanet-Tolosan to Isola Vicentina | 510.80 mi (822.06 km) |
| Castanet-Tolosan to Ispica | 845.33 mi (1,360.42 km) |
| Castanet-Tolosan to Istrana | 542.19 mi (872.56 km) |
| Castanet-Tolosan to Itri | 632.51 mi (1,017.93 km) |
| Castanet-Tolosan to Ittiri | 414.61 mi (667.25 km) |
