| Merthyr Tudful to Kirchlengern | 511.64 mi (823.41 km) |
| Merthyr Tudful to Kirchlinteln | 541.56 mi (871.56 km) |
| Merthyr Tudful to Kirchseeon | 723.32 mi (1,164.08 km) |
| Merthyr Tudful to Kirchzarten | 567.23 mi (912.87 km) |
| Merthyr Tudful to Kirkel | 495.68 mi (797.72 km) |
| Merthyr Tudful to Kissing | 679.08 mi (1,092.87 km) |
| Merthyr Tudful to Kisslegg | 650.59 mi (1,047.02 km) |
| Merthyr Tudful to Kitzingen | 607.36 mi (977.45 km) |
| Merthyr Tudful to Kleinblittersdorf | 491.28 mi (790.63 km) |
| Merthyr Tudful to Kleve | 406.71 mi (654.54 km) |
| Merthyr Tudful to Klipphausen | 728.55 mi (1,172.49 km) |
| Merthyr Tudful to Klotze | 617.88 mi (994.39 km) |
| Merthyr Tudful to Koblenz | 485.71 mi (781.67 km) |
| Merthyr Tudful to Kolbermoor | 737.71 mi (1,187.23 km) |
| Merthyr Tudful to Kolkwitz | 752.08 mi (1,210.36 km) |
