| Castleford to Islahiye | 2,137.35 mi (3,439.73 km) |
| Castleford to Isparta | 1,867.44 mi (3,005.36 km) |
| Castleford to Istanbul | 1,649.09 mi (2,653.95 km) |
| Castleford to Izmir | 1,707.59 mi (2,748.09 km) |
| Castleford to Kadinhani | 1,906.77 mi (3,068.65 km) |
| Castleford to Kadirli | 2,099.69 mi (3,379.13 km) |
| Castleford to Kagithane | 1,646.81 mi (2,650.29 km) |
| Castleford to Kahramanmaras | 2,122.03 mi (3,415.07 km) |
| Castleford to Kahta | 2,179.32 mi (3,507.28 km) |
| Castleford to Kaman | 1,911.74 mi (3,076.65 km) |
| Castleford to Kangal | 2,062.11 mi (3,318.65 km) |
| Castleford to Kapakli | 1,596.24 mi (2,568.90 km) |
| Castleford to Karaagac | 2,140.30 mi (3,444.49 km) |
| Castleford to Karaagac | 1,597.15 mi (2,570.37 km) |
| Castleford to Karabuk | 1,783.86 mi (2,870.85 km) |
