| Sitges to Smolyan | 1,183.24 mi (1,904.24 km) |
| Sitges to Sofia | 1,107.45 mi (1,782.28 km) |
| Sitges to Sopot | 1,179.67 mi (1,898.49 km) |
| Sitges to Sozopol | 1,330.63 mi (2,141.44 km) |
| Sitges to Sredets | 1,305.64 mi (2,101.23 km) |
| Sitges to Stamboliyski | 1,171.02 mi (1,884.58 km) |
| Sitges to Stara Zagora | 1,226.34 mi (1,973.61 km) |
| Sitges to Svilengrad | 1,258.72 mi (2,025.72 km) |
| Sitges to Svishtov | 1,207.97 mi (1,944.03 km) |
| Sitges to Targovishte | 1,270.39 mi (2,044.50 km) |
| Sitges to Teteven | 1,154.39 mi (1,857.81 km) |
| Sitges to Troyan | 1,177.24 mi (1,894.58 km) |
| Sitges to Tryavna | 1,216.91 mi (1,958.42 km) |
| Sitges to Tutrakan | 1,271.06 mi (2,045.58 km) |
| Sitges to Varna | 1,337.55 mi (2,152.58 km) |
