| Spartanburg to Smolyan | 5,402.13 mi (8,693.89 km) |
| Spartanburg to Sofia | 5,299.95 mi (8,529.44 km) |
| Spartanburg to Sopot | 5,360.29 mi (8,626.55 km) |
| Spartanburg to Sozopol | 5,489.44 mi (8,834.41 km) |
| Spartanburg to Sredets | 5,472.21 mi (8,806.67 km) |
| Spartanburg to Stamboliyski | 5,372.61 mi (8,646.39 km) |
| Spartanburg to Stara Zagora | 5,405.96 mi (8,700.04 km) |
| Spartanburg to Svilengrad | 5,456.28 mi (8,781.03 km) |
| Spartanburg to Svishtov | 5,344.79 mi (8,601.61 km) |
| Spartanburg to Targovishte | 5,409.44 mi (8,705.65 km) |
| Spartanburg to Teteven | 5,329.63 mi (8,577.21 km) |
| Spartanburg to Troyan | 5,349.35 mi (8,608.95 km) |
| Spartanburg to Tryavna | 5,381.85 mi (8,661.25 km) |
| Spartanburg to Tutrakan | 5,377.20 mi (8,653.76 km) |
| Spartanburg to Varna | 5,463.85 mi (8,793.22 km) |
