| Alcora to Smolyan | 1,301.54 mi (2,094.63 km) |
| Alcora to Sofia | 1,229.22 mi (1,978.24 km) |
| Alcora to Sopot | 1,301.35 mi (2,094.33 km) |
| Alcora to Sozopol | 1,451.98 mi (2,336.73 km) |
| Alcora to Sredets | 1,426.73 mi (2,296.11 km) |
| Alcora to Stamboliyski | 1,291.10 mi (2,077.82 km) |
| Alcora to Stara Zagora | 1,347.47 mi (2,168.54 km) |
| Alcora to Svilengrad | 1,377.94 mi (2,217.58 km) |
| Alcora to Svishtov | 1,332.31 mi (2,144.15 km) |
| Alcora to Targovishte | 1,393.82 mi (2,243.14 km) |
| Alcora to Teteven | 1,276.84 mi (2,054.87 km) |
| Alcora to Troyan | 1,299.60 mi (2,091.50 km) |
| Alcora to Tryavna | 1,339.26 mi (2,155.34 km) |
| Alcora to Tutrakan | 1,396.41 mi (2,247.31 km) |
| Alcora to Varna | 1,460.96 mi (2,351.19 km) |
