| Biganos to Smolyan | 1,306.72 mi (2,102.96 km) |
| Biganos to Sofia | 1,217.65 mi (1,959.62 km) |
| Biganos to Sopot | 1,288.27 mi (2,073.27 km) |
| Biganos to Sozopol | 1,437.32 mi (2,313.14 km) |
| Biganos to Sredets | 1,414.06 mi (2,275.72 km) |
| Biganos to Stamboliyski | 1,287.28 mi (2,071.68 km) |
| Biganos to Stara Zagora | 1,336.41 mi (2,150.75 km) |
| Biganos to Svilengrad | 1,376.59 mi (2,215.41 km) |
| Biganos to Svishtov | 1,301.92 mi (2,095.24 km) |
| Biganos to Targovishte | 1,367.91 mi (2,201.44 km) |
| Biganos to Teteven | 1,259.92 mi (2,027.64 km) |
| Biganos to Troyan | 1,282.56 mi (2,064.08 km) |
| Biganos to Tryavna | 1,321.26 mi (2,126.37 km) |
| Biganos to Tutrakan | 1,357.56 mi (2,184.78 km) |
| Biganos to Varna | 1,433.64 mi (2,307.23 km) |
