| Biddeford to Karditsa | 4,532.25 mi (7,293.95 km) |
| Biddeford to Kastoria | 4,457.03 mi (7,172.89 km) |
| Biddeford to Katerini | 4,519.33 mi (7,273.16 km) |
| Biddeford to Keratsini | 4,664.00 mi (7,505.99 km) |
| Biddeford to Kerkyra | 4,436.38 mi (7,139.67 km) |
| Biddeford to Kiato | 4,625.04 mi (7,443.28 km) |
| Biddeford to Kifisia | 4,667.52 mi (7,511.65 km) |
| Biddeford to Kilkis | 4,504.81 mi (7,249.78 km) |
| Biddeford to Komotini | 4,605.17 mi (7,411.31 km) |
| Biddeford to Korinthos | 4,635.72 mi (7,460.47 km) |
| Biddeford to Koropi | 4,677.82 mi (7,528.22 km) |
| Biddeford to Korydallos | 4,664.71 mi (7,507.13 km) |
| Biddeford to Kos | 4,866.42 mi (7,831.75 km) |
| Biddeford to Kozani | 4,487.77 mi (7,222.37 km) |
| Biddeford to Lagos | 4,590.53 mi (7,387.75 km) |
