| Frechen to Karlovo | 1,021.09 mi (1,643.28 km) |
| Frechen to Karnobat | 1,107.35 mi (1,782.10 km) |
| Frechen to Kavarna | 1,129.42 mi (1,817.63 km) |
| Frechen to Kazanlak | 1,045.38 mi (1,682.38 km) |
| Frechen to Knezha | 955.31 mi (1,537.42 km) |
| Frechen to Kostinbrod | 952.26 mi (1,532.51 km) |
| Frechen to Kozloduy | 929.45 mi (1,495.81 km) |
| Frechen to Kyustendil | 957.39 mi (1,540.77 km) |
| Frechen to Levski | 1,002.46 mi (1,613.30 km) |
| Frechen to Lom | 908.21 mi (1,461.62 km) |
| Frechen to Lovech | 995.96 mi (1,602.84 km) |
| Frechen to Lukovit | 971.58 mi (1,563.61 km) |
| Frechen to Lyaskovets | 1,036.95 mi (1,668.81 km) |
| Frechen to Mezdra | 955.69 mi (1,538.03 km) |
| Frechen to Momchilgrad | 1,095.28 mi (1,762.69 km) |
