| Caerphilly to Klaukkala | 1,227.00 mi (1,974.67 km) |
| Caerphilly to Kokkola | 1,273.20 mi (2,049.02 km) |
| Caerphilly to Kontiolahti | 1,435.98 mi (2,310.98 km) |
| Caerphilly to Korsholm | 1,209.51 mi (1,946.52 km) |
| Caerphilly to Kotka | 1,300.52 mi (2,092.98 km) |
| Caerphilly to Kouvola | 1,300.09 mi (2,092.29 km) |
| Caerphilly to Kuhmo | 1,456.85 mi (2,344.57 km) |
| Caerphilly to Kuopio | 1,373.86 mi (2,211.01 km) |
| Caerphilly to Kurikka | 1,213.30 mi (1,952.61 km) |
| Caerphilly to Kuusamo | 1,498.29 mi (2,411.27 km) |
| Caerphilly to Kuusankoski | 1,298.26 mi (2,089.35 km) |
| Caerphilly to Lahti | 1,268.53 mi (2,041.50 km) |
| Caerphilly to Laitila | 1,141.82 mi (1,837.59 km) |
| Caerphilly to Lapinlahti | 1,377.03 mi (2,216.12 km) |
| Caerphilly to Lappeenranta | 1,351.55 mi (2,175.11 km) |
