| Castlebar to Kikinda | 1,423.46 mi (2,290.83 km) |
| Castlebar to Kladovo | 1,558.12 mi (2,507.55 km) |
| Castlebar to Knic | 1,511.37 mi (2,432.31 km) |
| Castlebar to Knjazevac | 1,596.80 mi (2,569.81 km) |
| Castlebar to Koceljeva | 1,452.32 mi (2,337.29 km) |
| Castlebar to Kosjeric | 1,476.37 mi (2,376.00 km) |
| Castlebar to Kovacica | 1,458.54 mi (2,347.29 km) |
| Castlebar to Kovin | 1,486.81 mi (2,392.79 km) |
| Castlebar to Kragujevac | 1,516.05 mi (2,439.85 km) |
| Castlebar to Kraljevo | 1,518.39 mi (2,443.62 km) |
| Castlebar to Krupanj | 1,439.33 mi (2,316.37 km) |
| Castlebar to Krusevac | 1,549.54 mi (2,493.75 km) |
| Castlebar to Kucevo | 1,525.49 mi (2,455.04 km) |
| Castlebar to Kula | 1,395.90 mi (2,246.49 km) |
| Castlebar to Kursumlija | 1,566.25 mi (2,520.64 km) |
