| Clarkston to Karlovo | 5,511.93 mi (8,870.59 km) |
| Clarkston to Karnobat | 5,599.86 mi (9,012.11 km) |
| Clarkston to Kavarna | 5,618.47 mi (9,042.06 km) |
| Clarkston to Kazanlak | 5,537.04 mi (8,911.01 km) |
| Clarkston to Knezha | 5,447.24 mi (8,766.48 km) |
| Clarkston to Kostinbrod | 5,439.97 mi (8,754.79 km) |
| Clarkston to Kozloduy | 5,421.54 mi (8,725.13 km) |
| Clarkston to Kyustendil | 5,439.64 mi (8,754.26 km) |
| Clarkston to Levski | 5,494.93 mi (8,843.24 km) |
| Clarkston to Lom | 5,399.84 mi (8,690.20 km) |
| Clarkston to Lovech | 5,487.87 mi (8,831.88 km) |
| Clarkston to Lukovit | 5,462.95 mi (8,791.76 km) |
| Clarkston to Lyaskovets | 5,529.46 mi (8,898.80 km) |
| Clarkston to Mezdra | 5,446.08 mi (8,764.62 km) |
| Clarkston to Momchilgrad | 5,583.28 mi (8,985.43 km) |
