| Socastee to Smolyan | 5,337.71 mi (8,590.22 km) |
| Socastee to Sofia | 5,236.59 mi (8,427.48 km) |
| Socastee to Sopot | 5,298.69 mi (8,527.42 km) |
| Socastee to Sozopol | 5,431.31 mi (8,740.85 km) |
| Socastee to Sredets | 5,413.20 mi (8,711.70 km) |
| Socastee to Stamboliyski | 5,309.39 mi (8,544.63 km) |
| Socastee to Stara Zagora | 5,345.02 mi (8,601.98 km) |
| Socastee to Svilengrad | 5,394.39 mi (8,681.44 km) |
| Socastee to Svishtov | 5,286.51 mi (8,507.82 km) |
| Socastee to Targovishte | 5,351.88 mi (8,613.02 km) |
| Socastee to Teteven | 5,268.08 mi (8,478.16 km) |
| Socastee to Troyan | 5,288.32 mi (8,510.73 km) |
| Socastee to Tryavna | 5,321.83 mi (8,564.66 km) |
| Socastee to Tutrakan | 5,321.75 mi (8,564.53 km) |
| Socastee to Varna | 5,408.05 mi (8,703.42 km) |
