| Castlebar to Jicin | 1,065.71 mi (1,715.09 km) |
| Castlebar to Jihlava | 1,104.58 mi (1,777.65 km) |
| Castlebar to Jindrichuv Hradec | 1,088.61 mi (1,751.94 km) |
| Castlebar to Jirkov | 986.62 mi (1,587.81 km) |
| Castlebar to Kadan | 982.75 mi (1,581.58 km) |
| Castlebar to Karlovy Vary | 970.53 mi (1,561.91 km) |
| Castlebar to Karvina | 1,211.44 mi (1,949.63 km) |
| Castlebar to Kladno | 1,022.54 mi (1,645.62 km) |
| Castlebar to Klasterec nad Ohri | 978.46 mi (1,574.68 km) |
| Castlebar to Klatovy | 1,011.94 mi (1,628.56 km) |
| Castlebar to Kolin | 1,070.61 mi (1,722.99 km) |
| Castlebar to Koprivnice | 1,202.48 mi (1,935.20 km) |
| Castlebar to Kralupy nad Vltavou | 1,028.64 mi (1,655.43 km) |
| Castlebar to Kraluv Dvur | 1,025.48 mi (1,650.35 km) |
| Castlebar to Krnov | 1,170.53 mi (1,883.78 km) |
