| Santiago do Cacem to Smolyan | 1,778.77 mi (2,862.65 km) |
| Santiago do Cacem to Sofia | 1,706.47 mi (2,746.30 km) |
| Santiago do Cacem to Sopot | 1,778.63 mi (2,862.43 km) |
| Santiago do Cacem to Sozopol | 1,929.32 mi (3,104.94 km) |
| Santiago do Cacem to Sredets | 1,904.10 mi (3,064.35 km) |
| Santiago do Cacem to Stamboliyski | 1,768.50 mi (2,846.12 km) |
| Santiago do Cacem to Stara Zagora | 1,824.83 mi (2,936.78 km) |
| Santiago do Cacem to Svilengrad | 1,855.28 mi (2,985.79 km) |
| Santiago do Cacem to Svishtov | 1,808.64 mi (2,910.72 km) |
| Santiago do Cacem to Targovishte | 1,870.61 mi (3,010.46 km) |
| Santiago do Cacem to Teteven | 1,753.94 mi (2,822.70 km) |
| Santiago do Cacem to Troyan | 1,776.73 mi (2,859.37 km) |
| Santiago do Cacem to Tryavna | 1,816.40 mi (2,923.22 km) |
| Santiago do Cacem to Tutrakan | 1,872.06 mi (3,012.79 km) |
| Santiago do Cacem to Varna | 1,937.77 mi (3,118.54 km) |
