| North Potomac to Karlovo | 4,978.64 mi (8,012.35 km) |
| North Potomac to Karnobat | 5,066.63 mi (8,153.96 km) |
| North Potomac to Kavarna | 5,085.55 mi (8,184.39 km) |
| North Potomac to Kazanlak | 5,003.76 mi (8,052.77 km) |
| North Potomac to Knezha | 4,913.95 mi (7,908.24 km) |
| North Potomac to Kostinbrod | 4,906.73 mi (7,896.61 km) |
| North Potomac to Kozloduy | 4,888.26 mi (7,866.89 km) |
| North Potomac to Kyustendil | 4,906.52 mi (7,896.28 km) |
| North Potomac to Levski | 4,961.67 mi (7,985.04 km) |
| North Potomac to Lom | 4,866.55 mi (7,831.96 km) |
| North Potomac to Lovech | 4,954.59 mi (7,973.64 km) |
| North Potomac to Lukovit | 4,929.66 mi (7,933.52 km) |
| North Potomac to Lyaskovets | 4,996.20 mi (8,040.61 km) |
| North Potomac to Mezdra | 4,912.80 mi (7,906.39 km) |
| North Potomac to Momchilgrad | 5,050.05 mi (8,127.26 km) |
