| Southern Pines to Karlovo | 5,247.30 mi (8,444.72 km) |
| Southern Pines to Karnobat | 5,337.34 mi (8,589.62 km) |
| Southern Pines to Kavarna | 5,358.79 mi (8,624.14 km) |
| Southern Pines to Kazanlak | 5,272.94 mi (8,485.97 km) |
| Southern Pines to Knezha | 5,183.46 mi (8,341.97 km) |
| Southern Pines to Kostinbrod | 5,174.18 mi (8,327.03 km) |
| Southern Pines to Kozloduy | 5,157.95 mi (8,300.91 km) |
| Southern Pines to Kyustendil | 5,172.45 mi (8,324.25 km) |
| Southern Pines to Levski | 5,231.91 mi (8,419.94 km) |
| Southern Pines to Lom | 5,135.86 mi (8,265.37 km) |
| Southern Pines to Lovech | 5,224.03 mi (8,407.27 km) |
| Southern Pines to Lukovit | 5,198.70 mi (8,366.51 km) |
| Southern Pines to Lyaskovets | 5,266.52 mi (8,475.64 km) |
| Southern Pines to Mezdra | 5,181.32 mi (8,338.53 km) |
| Southern Pines to Momchilgrad | 5,317.32 mi (8,557.39 km) |
