| Horstel to Smolyan | 1,090.30 mi (1,754.66 km) |
| Horstel to Sofia | 986.00 mi (1,586.81 km) |
| Horstel to Sopot | 1,037.93 mi (1,670.38 km) |
| Horstel to Sozopol | 1,156.49 mi (1,861.18 km) |
| Horstel to Sredets | 1,141.12 mi (1,836.46 km) |
| Horstel to Stamboliyski | 1,056.31 mi (1,699.97 km) |
| Horstel to Stara Zagora | 1,080.69 mi (1,739.20 km) |
| Horstel to Svilengrad | 1,133.36 mi (1,823.97 km) |
| Horstel to Svishtov | 1,013.05 mi (1,630.35 km) |
| Horstel to Targovishte | 1,075.87 mi (1,731.44 km) |
| Horstel to Teteven | 1,007.63 mi (1,621.63 km) |
| Horstel to Troyan | 1,025.23 mi (1,649.95 km) |
| Horstel to Tryavna | 1,054.16 mi (1,696.51 km) |
| Horstel to Tutrakan | 1,040.85 mi (1,675.08 km) |
| Horstel to Varna | 1,127.67 mi (1,814.81 km) |
