| Alcobaca to Smolyan | 1,761.94 mi (2,835.56 km) |
| Alcobaca to Sofia | 1,685.06 mi (2,711.85 km) |
| Alcobaca to Sopot | 1,757.26 mi (2,828.03 km) |
| Alcobaca to Sozopol | 1,908.30 mi (3,071.11 km) |
| Alcobaca to Sredets | 1,883.47 mi (3,031.15 km) |
| Alcobaca to Stamboliyski | 1,749.36 mi (2,815.32 km) |
| Alcobaca to Stara Zagora | 1,804.20 mi (2,903.59 km) |
| Alcobaca to Svilengrad | 1,837.26 mi (2,956.79 km) |
| Alcobaca to Svishtov | 1,783.15 mi (2,869.70 km) |
| Alcobaca to Targovishte | 1,846.50 mi (2,971.65 km) |
| Alcobaca to Teteven | 1,731.49 mi (2,786.57 km) |
| Alcobaca to Troyan | 1,754.37 mi (2,823.39 km) |
| Alcobaca to Tryavna | 1,794.01 mi (2,887.18 km) |
| Alcobaca to Tutrakan | 1,844.73 mi (2,968.81 km) |
| Alcobaca to Varna | 1,913.58 mi (3,079.61 km) |
