| Rhondda to Klaukkala | 1,231.82 mi (1,982.42 km) |
| Rhondda to Kokkola | 1,276.46 mi (2,054.27 km) |
| Rhondda to Kontiolahti | 1,440.15 mi (2,317.70 km) |
| Rhondda to Korsholm | 1,212.92 mi (1,952.00 km) |
| Rhondda to Kotka | 1,305.42 mi (2,100.87 km) |
| Rhondda to Kouvola | 1,304.82 mi (2,099.91 km) |
| Rhondda to Kuhmo | 1,460.50 mi (2,350.45 km) |
| Rhondda to Kuopio | 1,377.86 mi (2,217.45 km) |
| Rhondda to Kurikka | 1,216.99 mi (1,958.55 km) |
| Rhondda to Kuusamo | 1,501.25 mi (2,416.02 km) |
| Rhondda to Kuusankoski | 1,302.97 mi (2,096.93 km) |
| Rhondda to Lahti | 1,273.16 mi (2,048.95 km) |
| Rhondda to Laitila | 1,146.19 mi (1,844.62 km) |
| Rhondda to Lapinlahti | 1,380.83 mi (2,222.23 km) |
| Rhondda to Lappeenranta | 1,356.28 mi (2,182.72 km) |
