| Merthyr Tudful to Kothen | 653.08 mi (1,051.04 km) |
| Merthyr Tudful to Kranenburg | 401.04 mi (645.42 km) |
| Merthyr Tudful to Krefeld | 427.98 mi (688.77 km) |
| Merthyr Tudful to Kressbronn am Bodensee | 645.99 mi (1,039.62 km) |
| Merthyr Tudful to Kreuzau | 432.00 mi (695.24 km) |
| Merthyr Tudful to Kreuztal | 491.93 mi (791.68 km) |
| Merthyr Tudful to Kriftel | 527.95 mi (849.66 km) |
| Merthyr Tudful to Kronach | 646.77 mi (1,040.88 km) |
| Merthyr Tudful to Kronberg | 527.37 mi (848.72 km) |
| Merthyr Tudful to Kronshagen | 586.12 mi (943.26 km) |
| Merthyr Tudful to Krumbach | 655.19 mi (1,054.43 km) |
| Merthyr Tudful to Kulmbach | 653.83 mi (1,052.24 km) |
| Merthyr Tudful to Kummersbruck | 687.21 mi (1,105.95 km) |
| Merthyr Tudful to Kunzell | 572.74 mi (921.73 km) |
| Merthyr Tudful to Kunzelsau | 597.56 mi (961.69 km) |
