| Bayou Blue to Smolyan | 6,022.06 mi (9,691.56 km) |
| Bayou Blue to Sofia | 5,919.35 mi (9,526.27 km) |
| Bayou Blue to Sopot | 5,978.54 mi (9,621.54 km) |
| Bayou Blue to Sozopol | 6,105.25 mi (9,825.44 km) |
| Bayou Blue to Sredets | 6,088.63 mi (9,798.71 km) |
| Bayou Blue to Stamboliyski | 5,991.86 mi (9,642.97 km) |
| Bayou Blue to Stara Zagora | 6,023.74 mi (9,694.27 km) |
| Bayou Blue to Svilengrad | 6,074.61 mi (9,776.14 km) |
| Bayou Blue to Svishtov | 5,960.87 mi (9,593.09 km) |
| Bayou Blue to Targovishte | 6,024.94 mi (9,696.20 km) |
| Bayou Blue to Teteven | 5,947.89 mi (9,572.20 km) |
| Bayou Blue to Troyan | 5,967.26 mi (9,603.38 km) |
| Bayou Blue to Tryavna | 5,999.06 mi (9,654.56 km) |
| Bayou Blue to Tutrakan | 5,991.21 mi (9,641.91 km) |
| Bayou Blue to Varna | 6,078.00 mi (9,781.60 km) |
