| Potomac to Karlovo | 4,980.58 mi (8,015.46 km) |
| Potomac to Karnobat | 5,068.67 mi (8,157.24 km) |
| Potomac to Kavarna | 5,087.71 mi (8,187.88 km) |
| Potomac to Kazanlak | 5,005.72 mi (8,055.92 km) |
| Potomac to Knezha | 4,915.93 mi (7,911.42 km) |
| Potomac to Kostinbrod | 4,908.60 mi (7,899.63 km) |
| Potomac to Kozloduy | 4,890.24 mi (7,870.08 km) |
| Potomac to Kyustendil | 4,908.32 mi (7,899.18 km) |
| Potomac to Levski | 4,963.68 mi (7,988.27 km) |
| Potomac to Lom | 4,868.51 mi (7,835.12 km) |
| Potomac to Lovech | 4,956.56 mi (7,976.81 km) |
| Potomac to Lukovit | 4,931.61 mi (7,936.66 km) |
| Potomac to Lyaskovets | 4,998.22 mi (8,043.85 km) |
| Potomac to Mezdra | 4,914.73 mi (7,909.49 km) |
| Potomac to Momchilgrad | 5,051.92 mi (8,130.28 km) |
