| Frechen to Smolyan | 1,065.80 mi (1,715.24 km) |
| Frechen to Sofia | 961.92 mi (1,548.06 km) |
| Frechen to Sopot | 1,018.58 mi (1,639.25 km) |
| Frechen to Sozopol | 1,145.31 mi (1,843.20 km) |
| Frechen to Sredets | 1,128.15 mi (1,815.59 km) |
| Frechen to Stamboliyski | 1,033.75 mi (1,663.65 km) |
| Frechen to Stara Zagora | 1,063.27 mi (1,711.17 km) |
| Frechen to Svilengrad | 1,114.64 mi (1,793.83 km) |
| Frechen to Svishtov | 1,000.65 mi (1,610.39 km) |
| Frechen to Targovishte | 1,065.40 mi (1,714.60 km) |
| Frechen to Teteven | 987.97 mi (1,589.98 km) |
| Frechen to Troyan | 1,006.93 mi (1,620.50 km) |
| Frechen to Tryavna | 1,038.37 mi (1,671.10 km) |
| Frechen to Tutrakan | 1,034.67 mi (1,665.15 km) |
| Frechen to Varna | 1,120.94 mi (1,803.99 km) |
