| Boussu to Karnobat | 1,219.92 mi (1,963.27 km) |
| Boussu to Kavarna | 1,247.30 mi (2,007.33 km) |
| Boussu to Kazanlak | 1,154.45 mi (1,857.90 km) |
| Boussu to Knezha | 1,065.08 mi (1,714.08 km) |
| Boussu to Kostinbrod | 1,056.59 mi (1,700.42 km) |
| Boussu to Kozloduy | 1,039.68 mi (1,673.21 km) |
| Boussu to Kyustendil | 1,057.58 mi (1,702.01 km) |
| Boussu to Levski | 1,114.05 mi (1,792.90 km) |
| Boussu to Lom | 1,017.42 mi (1,637.39 km) |
| Boussu to Lovech | 1,105.62 mi (1,779.32 km) |
| Boussu to Lukovit | 1,080.20 mi (1,738.42 km) |
| Boussu to Lyaskovets | 1,148.71 mi (1,848.67 km) |
| Boussu to Mezdra | 1,062.90 mi (1,710.56 km) |
| Boussu to Momchilgrad | 1,199.93 mi (1,931.11 km) |
| Boussu to Montana | 1,032.98 mi (1,662.42 km) |
