| Horizon West to Smolyan | 5,696.94 mi (9,168.34 km) |
| Horizon West to Sofia | 5,596.96 mi (9,007.43 km) |
| Horizon West to Sopot | 5,660.50 mi (9,109.69 km) |
| Horizon West to Sozopol | 5,795.84 mi (9,327.50 km) |
| Horizon West to Sredets | 5,777.03 mi (9,297.23 km) |
| Horizon West to Stamboliyski | 5,669.74 mi (9,124.56 km) |
| Horizon West to Stara Zagora | 5,707.32 mi (9,185.04 km) |
| Horizon West to Svilengrad | 5,755.78 mi (9,263.04 km) |
| Horizon West to Svishtov | 5,651.16 mi (9,094.66 km) |
| Horizon West to Targovishte | 5,717.02 mi (9,200.65 km) |
| Horizon West to Teteven | 5,629.98 mi (9,060.58 km) |
| Horizon West to Troyan | 5,650.63 mi (9,093.81 km) |
| Horizon West to Tryavna | 5,684.95 mi (9,149.04 km) |
| Horizon West to Tutrakan | 5,688.64 mi (9,154.97 km) |
| Horizon West to Varna | 5,774.52 mi (9,293.19 km) |
