| Bolton to Karlovo | 1,452.70 mi (2,337.89 km) |
| Bolton to Karnobat | 1,537.64 mi (2,474.60 km) |
| Bolton to Kavarna | 1,556.44 mi (2,504.84 km) |
| Bolton to Kazanlak | 1,476.78 mi (2,376.65 km) |
| Bolton to Knezha | 1,386.63 mi (2,231.57 km) |
| Bolton to Kostinbrod | 1,383.98 mi (2,227.30 km) |
| Bolton to Kozloduy | 1,360.70 mi (2,189.83 km) |
| Bolton to Kyustendil | 1,388.56 mi (2,234.67 km) |
| Bolton to Levski | 1,433.24 mi (2,306.58 km) |
| Bolton to Lom | 1,339.68 mi (2,156.00 km) |
| Bolton to Lovech | 1,427.27 mi (2,296.98 km) |
| Bolton to Lukovit | 1,403.10 mi (2,258.08 km) |
| Bolton to Lyaskovets | 1,467.64 mi (2,361.95 km) |
| Bolton to Mezdra | 1,387.37 mi (2,232.76 km) |
| Bolton to Momchilgrad | 1,527.03 mi (2,457.52 km) |
