| Sandridge to Smolyan | 1,368.60 mi (2,202.55 km) |
| Sandridge to Sofia | 1,265.59 mi (2,036.77 km) |
| Sandridge to Sopot | 1,324.93 mi (2,132.27 km) |
| Sandridge to Sozopol | 1,455.18 mi (2,341.89 km) |
| Sandridge to Sredets | 1,437.33 mi (2,313.16 km) |
| Sandridge to Stamboliyski | 1,338.04 mi (2,153.37 km) |
| Sandridge to Stara Zagora | 1,370.51 mi (2,205.62 km) |
| Sandridge to Svilengrad | 1,420.96 mi (2,286.81 km) |
| Sandridge to Svishtov | 1,310.39 mi (2,108.87 km) |
| Sandridge to Targovishte | 1,375.71 mi (2,213.98 km) |
| Sandridge to Teteven | 1,294.27 mi (2,082.92 km) |
| Sandridge to Troyan | 1,313.91 mi (2,114.54 km) |
| Sandridge to Tryavna | 1,346.52 mi (2,167.01 km) |
| Sandridge to Tutrakan | 1,346.32 mi (2,166.69 km) |
| Sandridge to Varna | 1,432.32 mi (2,305.10 km) |
