| Castleford to Glyka Nera | 1,612.59 mi (2,595.22 km) |
| Castleford to Grevena | 1,418.29 mi (2,282.52 km) |
| Castleford to Ialysos | 1,848.06 mi (2,974.16 km) |
| Castleford to Ilion | 1,605.24 mi (2,583.39 km) |
| Castleford to Ilioupoli | 1,612.31 mi (2,594.76 km) |
| Castleford to Ioannina | 1,420.85 mi (2,286.64 km) |
| Castleford to Irakleio | 1,800.64 mi (2,897.86 km) |
| Castleford to Irakleio | 1,606.66 mi (2,585.67 km) |
| Castleford to Kaisariani | 1,610.73 mi (2,592.22 km) |
| Castleford to Kalamaria | 1,446.23 mi (2,327.48 km) |
| Castleford to Kalamata | 1,605.73 mi (2,584.17 km) |
| Castleford to Kallithea | 1,609.69 mi (2,590.55 km) |
| Castleford to Kalymnos | 1,776.08 mi (2,858.33 km) |
| Castleford to Kalyvia Thorikou | 1,623.42 mi (2,612.64 km) |
| Castleford to Kamatero | 1,604.25 mi (2,581.79 km) |
