| Alella to Smolyan | 1,155.41 mi (1,859.45 km) |
| Alella to Sofia | 1,078.78 mi (1,736.12 km) |
| Alella to Sopot | 1,150.99 mi (1,852.34 km) |
| Alella to Sozopol | 1,302.00 mi (2,095.36 km) |
| Alella to Sredets | 1,277.08 mi (2,055.26 km) |
| Alella to Stamboliyski | 1,142.75 mi (1,839.08 km) |
| Alella to Stara Zagora | 1,197.79 mi (1,927.66 km) |
| Alella to Svilengrad | 1,230.64 mi (1,980.52 km) |
| Alella to Svishtov | 1,178.61 mi (1,896.79 km) |
| Alella to Targovishte | 1,241.26 mi (1,997.61 km) |
| Alella to Teteven | 1,125.53 mi (1,811.36 km) |
| Alella to Troyan | 1,148.39 mi (1,848.15 km) |
| Alella to Tryavna | 1,188.05 mi (1,911.98 km) |
| Alella to Tutrakan | 1,241.45 mi (1,997.92 km) |
| Alella to Varna | 1,308.40 mi (2,105.67 km) |
