| Biddeford to Jozefow | 4,007.07 mi (6,448.75 km) |
| Biddeford to Kalisz | 3,904.31 mi (6,283.38 km) |
| Biddeford to Kamien Pomorski | 3,710.91 mi (5,972.13 km) |
| Biddeford to Kamienna Gora | 3,859.98 mi (6,212.04 km) |
| Biddeford to Karczew | 4,009.46 mi (6,452.60 km) |
| Biddeford to Kartuzy | 3,822.88 mi (6,152.33 km) |
| Biddeford to Katowice | 3,991.35 mi (6,423.46 km) |
| Biddeford to Kedzierzyn-Kozle | 3,957.42 mi (6,368.85 km) |
| Biddeford to Kepno | 3,916.91 mi (6,303.66 km) |
| Biddeford to Ketrzyn | 3,943.62 mi (6,346.65 km) |
| Biddeford to Kety | 4,012.02 mi (6,456.73 km) |
| Biddeford to Kielce | 4,030.28 mi (6,486.11 km) |
| Biddeford to Kielczow | 3,891.47 mi (6,262.71 km) |
| Biddeford to Klobuck | 3,965.27 mi (6,381.49 km) |
| Biddeford to Klodzko | 3,895.39 mi (6,269.02 km) |
