| Caerphilly to Karditsa | 1,469.61 mi (2,365.11 km) |
| Caerphilly to Kastoria | 1,390.58 mi (2,237.93 km) |
| Caerphilly to Katerini | 1,450.71 mi (2,334.70 km) |
| Caerphilly to Keratsini | 1,602.76 mi (2,579.40 km) |
| Caerphilly to Kerkyra | 1,380.56 mi (2,221.79 km) |
| Caerphilly to Kiato | 1,567.16 mi (2,522.10 km) |
| Caerphilly to Kifisia | 1,604.90 mi (2,582.84 km) |
| Caerphilly to Kilkis | 1,433.31 mi (2,306.69 km) |
| Caerphilly to Komotini | 1,532.01 mi (2,465.53 km) |
| Caerphilly to Korinthos | 1,577.50 mi (2,538.74 km) |
| Caerphilly to Koropi | 1,615.96 mi (2,600.64 km) |
| Caerphilly to Korydallos | 1,603.25 mi (2,580.18 km) |
| Caerphilly to Kos | 1,798.65 mi (2,894.64 km) |
| Caerphilly to Kozani | 1,420.85 mi (2,286.64 km) |
| Caerphilly to Lagos | 1,517.36 mi (2,441.95 km) |
