| Biddeford to Kanjiza | 4,186.55 mi (6,737.60 km) |
| Biddeford to Kikinda | 4,211.48 mi (6,777.73 km) |
| Biddeford to Kladovo | 4,346.15 mi (6,994.45 km) |
| Biddeford to Knic | 4,297.06 mi (6,915.45 km) |
| Biddeford to Knjazevac | 4,383.63 mi (7,054.77 km) |
| Biddeford to Koceljeva | 4,238.23 mi (6,820.77 km) |
| Biddeford to Kosjeric | 4,261.06 mi (6,857.51 km) |
| Biddeford to Kovacica | 4,246.31 mi (6,833.78 km) |
| Biddeford to Kovin | 4,274.38 mi (6,878.96 km) |
| Biddeford to Kragujevac | 4,302.28 mi (6,923.86 km) |
| Biddeford to Kraljevo | 4,303.49 mi (6,925.79 km) |
| Biddeford to Krupanj | 4,224.28 mi (6,798.31 km) |
| Biddeford to Krusevac | 4,335.21 mi (6,976.85 km) |
| Biddeford to Kucevo | 4,313.16 mi (6,941.37 km) |
| Biddeford to Kula | 4,183.65 mi (6,732.93 km) |
