| Front Royal to Karlovo | 5,024.63 mi (8,086.35 km) |
| Front Royal to Karnobat | 5,112.17 mi (8,227.25 km) |
| Front Royal to Kavarna | 5,130.50 mi (8,256.74 km) |
| Front Royal to Kazanlak | 5,049.63 mi (8,126.60 km) |
| Front Royal to Knezha | 4,959.77 mi (7,981.98 km) |
| Front Royal to Kostinbrod | 4,952.96 mi (7,971.02 km) |
| Front Royal to Kozloduy | 4,934.04 mi (7,940.57 km) |
| Front Royal to Kyustendil | 4,953.05 mi (7,971.16 km) |
| Front Royal to Levski | 5,007.33 mi (8,058.51 km) |
| Front Royal to Lom | 4,912.41 mi (7,905.77 km) |
| Front Royal to Lovech | 5,000.41 mi (8,047.38 km) |
| Front Royal to Lukovit | 4,975.57 mi (8,007.40 km) |
| Front Royal to Lyaskovets | 5,041.83 mi (8,114.05 km) |
| Front Royal to Mezdra | 4,958.82 mi (7,980.45 km) |
| Front Royal to Momchilgrad | 5,096.30 mi (8,201.70 km) |
