| West Springfield to Karlovo | 4,992.62 mi (8,034.85 km) |
| West Springfield to Karnobat | 5,080.91 mi (8,176.94 km) |
| West Springfield to Kavarna | 5,100.20 mi (8,207.97 km) |
| West Springfield to Kazanlak | 5,017.81 mi (8,075.39 km) |
| West Springfield to Knezha | 4,928.05 mi (7,930.93 km) |
| West Springfield to Kostinbrod | 4,920.53 mi (7,918.83 km) |
| West Springfield to Kozloduy | 4,902.38 mi (7,889.62 km) |
| West Springfield to Kyustendil | 4,920.11 mi (7,918.16 km) |
| West Springfield to Levski | 4,975.87 mi (8,007.89 km) |
| West Springfield to Lom | 4,880.62 mi (7,854.59 km) |
| West Springfield to Lovech | 4,968.68 mi (7,996.31 km) |
| West Springfield to Lukovit | 4,943.69 mi (7,956.10 km) |
| West Springfield to Lyaskovets | 5,010.42 mi (8,063.49 km) |
| West Springfield to Mezdra | 4,926.76 mi (7,928.85 km) |
| West Springfield to Momchilgrad | 5,063.84 mi (8,149.46 km) |
