| Opfikon to Karditsa | 869.54 mi (1,399.38 km) |
| Opfikon to Kastoria | 790.26 mi (1,271.80 km) |
| Opfikon to Katerini | 850.69 mi (1,369.05 km) |
| Opfikon to Keratsini | 1,002.77 mi (1,613.80 km) |
| Opfikon to Kerkyra | 782.51 mi (1,259.33 km) |
| Opfikon to Kiato | 967.87 mi (1,557.64 km) |
| Opfikon to Kifisia | 1,004.73 mi (1,616.95 km) |
| Opfikon to Kilkis | 834.80 mi (1,343.49 km) |
| Opfikon to Komotini | 938.81 mi (1,510.87 km) |
| Opfikon to Korinthos | 978.12 mi (1,574.13 km) |
| Opfikon to Koropi | 1,015.87 mi (1,634.89 km) |
| Opfikon to Korydallos | 1,003.23 mi (1,614.54 km) |
| Opfikon to Kos | 1,198.58 mi (1,928.93 km) |
| Opfikon to Kozani | 820.56 mi (1,320.56 km) |
| Opfikon to Lagos | 923.11 mi (1,485.61 km) |
