| Pittsfield to Karlovo | 4,670.68 mi (7,516.73 km) |
| Pittsfield to Karnobat | 4,757.87 mi (7,657.06 km) |
| Pittsfield to Kavarna | 4,775.93 mi (7,686.11 km) |
| Pittsfield to Kazanlak | 4,695.58 mi (7,556.81 km) |
| Pittsfield to Knezha | 4,605.68 mi (7,412.13 km) |
| Pittsfield to Kostinbrod | 4,599.27 mi (7,401.82 km) |
| Pittsfield to Kozloduy | 4,579.92 mi (7,370.67 km) |
| Pittsfield to Kyustendil | 4,599.71 mi (7,402.52 km) |
| Pittsfield to Levski | 4,653.11 mi (7,488.46 km) |
| Pittsfield to Lom | 4,558.36 mi (7,335.98 km) |
| Pittsfield to Lovech | 4,646.32 mi (7,477.54 km) |
| Pittsfield to Lukovit | 4,621.56 mi (7,437.68 km) |
| Pittsfield to Lyaskovets | 4,687.60 mi (7,543.97 km) |
| Pittsfield to Mezdra | 4,604.91 mi (7,410.89 km) |
| Pittsfield to Momchilgrad | 4,742.62 mi (7,632.52 km) |
