| Horsell to Smolyan | 1,368.14 mi (2,201.81 km) |
| Horsell to Sofia | 1,265.58 mi (2,036.75 km) |
| Horsell to Sopot | 1,325.97 mi (2,133.94 km) |
| Horsell to Sozopol | 1,458.04 mi (2,346.49 km) |
| Horsell to Sredets | 1,439.76 mi (2,317.06 km) |
| Horsell to Stamboliyski | 1,338.19 mi (2,153.61 km) |
| Horsell to Stara Zagora | 1,371.93 mi (2,207.90 km) |
| Horsell to Svilengrad | 1,421.90 mi (2,288.32 km) |
| Horsell to Svishtov | 1,313.27 mi (2,113.51 km) |
| Horsell to Targovishte | 1,378.93 mi (2,219.17 km) |
| Horsell to Teteven | 1,295.32 mi (2,084.61 km) |
| Horsell to Troyan | 1,315.26 mi (2,116.70 km) |
| Horsell to Tryavna | 1,348.43 mi (2,170.09 km) |
| Horsell to Tutrakan | 1,350.70 mi (2,173.75 km) |
| Horsell to Varna | 1,436.39 mi (2,311.65 km) |
