| Rhondda to Koscian | 854.38 mi (1,374.99 km) |
| Rhondda to Koscielisko | 1,033.18 mi (1,662.74 km) |
| Rhondda to Koscierzyna | 905.51 mi (1,457.28 km) |
| Rhondda to Kostrzyn | 876.53 mi (1,410.63 km) |
| Rhondda to Kostrzyn nad Odra | 768.41 mi (1,236.64 km) |
| Rhondda to Koszalin | 833.15 mi (1,340.82 km) |
| Rhondda to Kowary | 832.90 mi (1,340.42 km) |
| Rhondda to Kozienice | 1,067.01 mi (1,717.19 km) |
| Rhondda to Kozuchow | 812.43 mi (1,307.48 km) |
| Rhondda to Kozy | 990.09 mi (1,593.39 km) |
| Rhondda to Krakow | 1,020.26 mi (1,641.96 km) |
| Rhondda to Krapkowice | 929.03 mi (1,495.14 km) |
| Rhondda to Krasnik | 1,103.57 mi (1,776.03 km) |
| Rhondda to Krasnystaw | 1,143.64 mi (1,840.51 km) |
| Rhondda to Krosno | 1,105.05 mi (1,778.41 km) |
