| Fredrikstad to Karlovo | 1,287.81 mi (2,072.53 km) |
| Fredrikstad to Karnobat | 1,333.38 mi (2,145.87 km) |
| Fredrikstad to Kavarna | 1,314.57 mi (2,115.59 km) |
| Fredrikstad to Kazanlak | 1,301.26 mi (2,094.18 km) |
| Fredrikstad to Knezha | 1,219.15 mi (1,962.03 km) |
| Fredrikstad to Kostinbrod | 1,247.01 mi (2,006.87 km) |
| Fredrikstad to Kozloduy | 1,194.37 mi (1,922.15 km) |
| Fredrikstad to Kyustendil | 1,272.43 mi (2,047.77 km) |
| Fredrikstad to Levski | 1,248.38 mi (2,009.07 km) |
| Fredrikstad to Lom | 1,182.37 mi (1,902.84 km) |
| Fredrikstad to Lovech | 1,254.76 mi (2,019.34 km) |
| Fredrikstad to Lukovit | 1,239.90 mi (1,995.43 km) |
| Fredrikstad to Lyaskovets | 1,277.19 mi (2,055.43 km) |
| Fredrikstad to Mezdra | 1,234.31 mi (1,986.43 km) |
| Fredrikstad to Momchilgrad | 1,370.64 mi (2,205.84 km) |
