| Barcelona to Karditsa | 1,046.02 mi (1,683.40 km) |
| Barcelona to Kastoria | 995.98 mi (1,602.88 km) |
| Barcelona to Katerini | 1,062.92 mi (1,710.60 km) |
| Barcelona to Keratsini | 1,161.15 mi (1,868.70 km) |
| Barcelona to Kerkyra | 938.44 mi (1,510.27 km) |
| Barcelona to Kiato | 1,115.40 mi (1,795.07 km) |
| Barcelona to Kifisia | 1,168.97 mi (1,881.27 km) |
| Barcelona to Kilkis | 1,073.67 mi (1,727.91 km) |
| Barcelona to Komotini | 1,203.93 mi (1,937.54 km) |
| Barcelona to Korinthos | 1,126.16 mi (1,812.39 km) |
| Barcelona to Koropi | 1,175.88 mi (1,892.39 km) |
| Barcelona to Korydallos | 1,162.51 mi (1,870.88 km) |
| Barcelona to Kos | 1,374.01 mi (2,211.26 km) |
| Barcelona to Kozani | 1,025.37 mi (1,650.18 km) |
| Barcelona to Lagos | 1,184.11 mi (1,905.63 km) |
