| Castlebar to Klaukkala | 1,336.33 mi (2,150.62 km) |
| Castlebar to Kokkola | 1,327.25 mi (2,136.00 km) |
| Castlebar to Kontiolahti | 1,518.20 mi (2,443.31 km) |
| Castlebar to Korsholm | 1,270.35 mi (2,044.43 km) |
| Castlebar to Kotka | 1,411.32 mi (2,271.30 km) |
| Castlebar to Kouvola | 1,404.86 mi (2,260.91 km) |
| Castlebar to Kuhmo | 1,520.30 mi (2,446.68 km) |
| Castlebar to Kuopio | 1,451.25 mi (2,335.56 km) |
| Castlebar to Kurikka | 1,283.73 mi (2,065.97 km) |
| Castlebar to Kuusamo | 1,536.77 mi (2,473.19 km) |
| Castlebar to Kuusankoski | 1,402.35 mi (2,256.87 km) |
| Castlebar to Lahti | 1,370.21 mi (2,205.14 km) |
| Castlebar to Laitila | 1,237.82 mi (1,992.07 km) |
| Castlebar to Lapinlahti | 1,447.28 mi (2,329.17 km) |
| Castlebar to Lappeenranta | 1,455.19 mi (2,341.91 km) |
