| Merthyr Tudful to Kanjiza | 1,127.99 mi (1,815.32 km) |
| Merthyr Tudful to Kikinda | 1,152.62 mi (1,854.97 km) |
| Merthyr Tudful to Kladovo | 1,286.22 mi (2,069.98 km) |
| Merthyr Tudful to Knic | 1,233.82 mi (1,985.64 km) |
| Merthyr Tudful to Knjazevac | 1,320.77 mi (2,125.57 km) |
| Merthyr Tudful to Koceljeva | 1,175.05 mi (1,891.05 km) |
| Merthyr Tudful to Kosjeric | 1,197.80 mi (1,927.67 km) |
| Merthyr Tudful to Kovacica | 1,184.99 mi (1,907.06 km) |
| Merthyr Tudful to Kovin | 1,212.51 mi (1,951.34 km) |
| Merthyr Tudful to Kragujevac | 1,239.17 mi (1,994.25 km) |
| Merthyr Tudful to Kraljevo | 1,240.21 mi (1,995.92 km) |
| Merthyr Tudful to Krupanj | 1,161.00 mi (1,868.44 km) |
| Merthyr Tudful to Krusevac | 1,271.96 mi (2,047.02 km) |
| Merthyr Tudful to Kucevo | 1,251.45 mi (2,014.02 km) |
| Merthyr Tudful to Kula | 1,122.34 mi (1,806.23 km) |
