| Biggleswade to Karlovo | 1,332.39 mi (2,144.28 km) |
| Biggleswade to Karnobat | 1,420.73 mi (2,286.44 km) |
| Biggleswade to Kavarna | 1,443.95 mi (2,323.81 km) |
| Biggleswade to Kazanlak | 1,357.34 mi (2,184.42 km) |
| Biggleswade to Knezha | 1,267.51 mi (2,039.86 km) |
| Biggleswade to Kostinbrod | 1,261.63 mi (2,030.40 km) |
| Biggleswade to Kozloduy | 1,241.83 mi (1,998.54 km) |
| Biggleswade to Kyustendil | 1,264.09 mi (2,034.35 km) |
| Biggleswade to Levski | 1,315.43 mi (2,116.99 km) |
| Biggleswade to Lom | 1,220.12 mi (1,963.60 km) |
| Biggleswade to Lovech | 1,308.15 mi (2,105.26 km) |
| Biggleswade to Lukovit | 1,283.27 mi (2,065.23 km) |
| Biggleswade to Lyaskovets | 1,350.01 mi (2,172.64 km) |
| Biggleswade to Mezdra | 1,266.66 mi (2,038.50 km) |
| Biggleswade to Momchilgrad | 1,404.96 mi (2,261.06 km) |
