| Biddeford to Koscian | 3,840.11 mi (6,180.06 km) |
| Biddeford to Koscielisko | 4,059.77 mi (6,533.57 km) |
| Biddeford to Koscierzyna | 3,822.20 mi (6,151.24 km) |
| Biddeford to Kostrzyn | 3,851.09 mi (6,197.73 km) |
| Biddeford to Kostrzyn nad Odra | 3,749.77 mi (6,034.67 km) |
| Biddeford to Koszalin | 3,754.95 mi (6,043.01 km) |
| Biddeford to Kowary | 3,852.05 mi (6,199.28 km) |
| Biddeford to Kozienice | 4,039.02 mi (6,500.18 km) |
| Biddeford to Kozuchow | 3,811.63 mi (6,134.23 km) |
| Biddeford to Kozy | 4,010.68 mi (6,454.56 km) |
| Biddeford to Krakow | 4,033.55 mi (6,491.37 km) |
| Biddeford to Krapkowice | 3,944.48 mi (6,348.03 km) |
| Biddeford to Krasnik | 4,087.28 mi (6,577.84 km) |
| Biddeford to Krasnystaw | 4,120.22 mi (6,630.86 km) |
| Biddeford to Krosno | 4,115.80 mi (6,623.73 km) |
