| Butler to Karlovo | 5,003.89 mi (8,052.98 km) |
| Butler to Karnobat | 5,088.50 mi (8,189.16 km) |
| Butler to Kavarna | 5,103.22 mi (8,212.83 km) |
| Butler to Kazanlak | 5,028.16 mi (8,092.03 km) |
| Butler to Knezha | 4,938.03 mi (7,946.99 km) |
| Butler to Kostinbrod | 4,933.95 mi (7,940.43 km) |
| Butler to Kozloduy | 4,912.10 mi (7,905.26 km) |
| Butler to Kyustendil | 4,935.99 mi (7,943.71 km) |
| Butler to Levski | 4,984.50 mi (8,021.77 km) |
| Butler to Lom | 4,891.02 mi (7,871.33 km) |
| Butler to Lovech | 4,978.67 mi (8,012.39 km) |
| Butler to Lukovit | 4,954.41 mi (7,973.35 km) |
| Butler to Lyaskovets | 5,018.83 mi (8,077.03 km) |
| Butler to Mezdra | 4,938.39 mi (7,947.58 km) |
| Butler to Momchilgrad | 5,077.26 mi (8,171.06 km) |
