| Castleford to Imola | 874.24 mi (1,406.95 km) |
| Castleford to Impruneta | 897.83 mi (1,444.91 km) |
| Castleford to Induno Olona | 707.11 mi (1,137.99 km) |
| Castleford to Inverigo | 724.56 mi (1,166.06 km) |
| Castleford to Inveruno | 726.31 mi (1,168.88 km) |
| Castleford to Inzago | 743.33 mi (1,196.28 km) |
| Castleford to Iseo | 753.21 mi (1,212.18 km) |
| Castleford to Isernia | 1,102.89 mi (1,774.93 km) |
| Castleford to Isola Capo Rizzuto | 1,338.80 mi (2,154.59 km) |
| Castleford to Isola del Liri | 1,078.84 mi (1,736.22 km) |
| Castleford to Isola della Scala | 803.18 mi (1,292.59 km) |
| Castleford to Isola Vicentina | 797.58 mi (1,283.57 km) |
| Castleford to Ispica | 1,404.76 mi (2,260.75 km) |
| Castleford to Istrana | 815.85 mi (1,312.98 km) |
| Castleford to Itri | 1,100.36 mi (1,770.86 km) |
