| Alcoy to Smolyan | 1,339.63 mi (2,155.93 km) |
| Alcoy to Sofia | 1,272.63 mi (2,048.10 km) |
| Alcoy to Sopot | 1,344.37 mi (2,163.55 km) |
| Alcoy to Sozopol | 1,493.98 mi (2,404.34 km) |
| Alcoy to Sredets | 1,468.43 mi (2,363.21 km) |
| Alcoy to Stamboliyski | 1,331.74 mi (2,143.23 km) |
| Alcoy to Stara Zagora | 1,389.48 mi (2,236.15 km) |
| Alcoy to Svilengrad | 1,417.03 mi (2,280.49 km) |
| Alcoy to Svishtov | 1,379.53 mi (2,220.14 km) |
| Alcoy to Targovishte | 1,439.30 mi (2,316.33 km) |
| Alcoy to Teteven | 1,321.12 mi (2,126.14 km) |
| Alcoy to Troyan | 1,343.67 mi (2,162.43 km) |
| Alcoy to Tryavna | 1,383.19 mi (2,226.03 km) |
| Alcoy to Tutrakan | 1,445.20 mi (2,325.83 km) |
| Alcoy to Varna | 1,506.23 mi (2,424.05 km) |
