| Merthyr Tudful to Karlskoga | 869.80 mi (1,399.80 km) |
| Merthyr Tudful to Karlskrona | 825.95 mi (1,329.24 km) |
| Merthyr Tudful to Karlstad | 840.58 mi (1,352.78 km) |
| Merthyr Tudful to Katrineholm | 912.49 mi (1,468.51 km) |
| Merthyr Tudful to Kavlinge | 727.06 mi (1,170.09 km) |
| Merthyr Tudful to Kinna | 753.37 mi (1,212.43 km) |
| Merthyr Tudful to Kiruna | 1,365.58 mi (2,197.68 km) |
| Merthyr Tudful to Klippansbruk | 734.77 mi (1,182.50 km) |
| Merthyr Tudful to Koping | 921.22 mi (1,482.56 km) |
| Merthyr Tudful to Kristianstad | 769.55 mi (1,238.47 km) |
| Merthyr Tudful to Kristinehamn | 856.39 mi (1,378.23 km) |
| Merthyr Tudful to Kumla | 881.94 mi (1,419.35 km) |
| Merthyr Tudful to Kungalv | 740.57 mi (1,191.83 km) |
| Merthyr Tudful to Kungsangen | 976.15 mi (1,570.96 km) |
| Merthyr Tudful to Kungsbacka | 731.73 mi (1,177.61 km) |
