| Rhondda to Kluczbork | 932.21 mi (1,500.25 km) |
| Rhondda to Knurow | 963.83 mi (1,551.13 km) |
| Rhondda to Kobylka | 1,043.88 mi (1,679.97 km) |
| Rhondda to Kokoszki | 926.74 mi (1,491.45 km) |
| Rhondda to Kolbuszowa | 1,095.21 mi (1,762.57 km) |
| Rhondda to Kolno | 1,067.45 mi (1,717.89 km) |
| Rhondda to Kolo | 937.16 mi (1,508.22 km) |
| Rhondda to Kolobrzeg | 808.54 mi (1,301.23 km) |
| Rhondda to Koluszki | 990.44 mi (1,593.96 km) |
| Rhondda to Komorniki | 855.30 mi (1,376.47 km) |
| Rhondda to Konin | 921.61 mi (1,483.18 km) |
| Rhondda to Konskie | 1,023.06 mi (1,646.45 km) |
| Rhondda to Konstancin-Jeziorna | 1,042.65 mi (1,677.98 km) |
| Rhondda to Konstantynow Lodzki | 970.70 mi (1,562.19 km) |
| Rhondda to Koronowo | 902.93 mi (1,453.12 km) |
