| Rhondda to Kelkheim (Taunus) | 526.73 mi (847.70 km) |
| Rhondda to Kelsterbach | 531.65 mi (855.61 km) |
| Rhondda to Kemberg | 686.05 mi (1,104.09 km) |
| Rhondda to Kempen | 423.22 mi (681.10 km) |
| Rhondda to Kempten | 668.78 mi (1,076.30 km) |
| Rhondda to Kenzingen | 550.38 mi (885.74 km) |
| Rhondda to Kerpen | 440.09 mi (708.26 km) |
| Rhondda to Ketsch | 547.14 mi (880.54 km) |
| Rhondda to Kevelaer | 414.61 mi (667.25 km) |
| Rhondda to Kiel | 593.21 mi (954.68 km) |
| Rhondda to Kierspe | 474.47 mi (763.58 km) |
| Rhondda to Kirchhain | 536.01 mi (862.62 km) |
| Rhondda to Kirchheim bei Munchen | 714.32 mi (1,149.59 km) |
| Rhondda to Kirchheim unter Teck | 604.73 mi (973.22 km) |
| Rhondda to Kirchhundem | 496.97 mi (799.80 km) |
