| Friedrichsdorf to Smolyan | 973.73 mi (1,567.07 km) |
| Friedrichsdorf to Sofia | 869.83 mi (1,399.86 km) |
| Friedrichsdorf to Sopot | 926.54 mi (1,491.13 km) |
| Friedrichsdorf to Sozopol | 1,053.82 mi (1,695.96 km) |
| Friedrichsdorf to Sredets | 1,036.49 mi (1,668.07 km) |
| Friedrichsdorf to Stamboliyski | 941.65 mi (1,515.44 km) |
| Friedrichsdorf to Stara Zagora | 971.31 mi (1,563.17 km) |
| Friedrichsdorf to Svilengrad | 1,022.60 mi (1,645.72 km) |
| Friedrichsdorf to Svishtov | 909.11 mi (1,463.06 km) |
| Friedrichsdorf to Targovishte | 974.04 mi (1,567.56 km) |
| Friedrichsdorf to Teteven | 895.92 mi (1,441.85 km) |
| Friedrichsdorf to Troyan | 914.94 mi (1,472.45 km) |
| Friedrichsdorf to Tryavna | 946.51 mi (1,523.26 km) |
| Friedrichsdorf to Tutrakan | 943.95 mi (1,519.14 km) |
| Friedrichsdorf to Varna | 1,030.06 mi (1,657.72 km) |
