| Hullhorst to Smolyan | 1,053.28 mi (1,695.10 km) |
| Hullhorst to Sofia | 949.04 mi (1,527.34 km) |
| Hullhorst to Sopot | 999.63 mi (1,608.76 km) |
| Hullhorst to Sozopol | 1,116.12 mi (1,796.23 km) |
| Hullhorst to Sredets | 1,101.17 mi (1,772.16 km) |
| Hullhorst to Stamboliyski | 1,018.83 mi (1,639.64 km) |
| Hullhorst to Stara Zagora | 1,041.85 mi (1,676.70 km) |
| Hullhorst to Svilengrad | 1,094.78 mi (1,761.88 km) |
| Hullhorst to Svishtov | 973.13 mi (1,566.10 km) |
| Hullhorst to Targovishte | 1,035.44 mi (1,666.38 km) |
| Hullhorst to Teteven | 969.47 mi (1,560.21 km) |
| Hullhorst to Troyan | 986.69 mi (1,587.93 km) |
| Hullhorst to Tryavna | 1,014.97 mi (1,633.43 km) |
| Hullhorst to Tutrakan | 999.57 mi (1,608.66 km) |
| Hullhorst to Varna | 1,086.41 mi (1,748.41 km) |
