| Biddeford to Kluczbork | 3,936.02 mi (6,334.41 km) |
| Biddeford to Knurow | 3,980.47 mi (6,405.95 km) |
| Biddeford to Kobylka | 3,998.72 mi (6,435.31 km) |
| Biddeford to Kokoszki | 3,832.55 mi (6,167.89 km) |
| Biddeford to Kolbuszowa | 4,095.32 mi (6,590.78 km) |
| Biddeford to Kolno | 3,986.63 mi (6,415.86 km) |
| Biddeford to Kolo | 3,909.70 mi (6,292.05 km) |
| Biddeford to Kolobrzeg | 3,733.77 mi (6,008.93 km) |
| Biddeford to Koluszki | 3,968.25 mi (6,386.28 km) |
| Biddeford to Komorniki | 3,835.93 mi (6,173.33 km) |
| Biddeford to Konin | 3,895.62 mi (6,269.40 km) |
| Biddeford to Konskie | 4,010.53 mi (6,454.33 km) |
| Biddeford to Konstancin-Jeziorna | 4,004.62 mi (6,444.81 km) |
| Biddeford to Konstantynow Lodzki | 3,951.04 mi (6,358.58 km) |
| Biddeford to Koronowo | 3,846.62 mi (6,190.54 km) |
