| Pittsburg to Karlovo | 6,484.36 mi (10,435.56 km) |
| Pittsburg to Karnobat | 6,531.57 mi (10,511.54 km) |
| Pittsburg to Kavarna | 6,508.22 mi (10,473.96 km) |
| Pittsburg to Kazanlak | 6,499.00 mi (10,459.12 km) |
| Pittsburg to Knezha | 6,415.17 mi (10,324.21 km) |
| Pittsburg to Kostinbrod | 6,437.92 mi (10,360.83 km) |
| Pittsburg to Kozloduy | 6,389.86 mi (10,283.49 km) |
| Pittsburg to Kyustendil | 6,458.41 mi (10,393.81 km) |
| Pittsburg to Levski | 6,446.39 mi (10,374.47 km) |
| Pittsburg to Lom | 6,376.18 mi (10,261.46 km) |
| Pittsburg to Lovech | 6,451.81 mi (10,383.18 km) |
| Pittsburg to Lukovit | 6,435.62 mi (10,357.13 km) |
| Pittsburg to Lyaskovets | 6,475.58 mi (10,421.44 km) |
| Pittsburg to Mezdra | 6,428.29 mi (10,345.34 km) |
| Pittsburg to Momchilgrad | 6,567.05 mi (10,568.65 km) |
