| Santa Clara to Smolyan | 6,590.70 mi (10,606.71 km) |
| Santa Clara to Sofia | 6,490.34 mi (10,445.19 km) |
| Santa Clara to Sopot | 6,525.57 mi (10,501.89 km) |
| Santa Clara to Sozopol | 6,603.34 mi (10,627.06 km) |
| Santa Clara to Sredets | 6,597.19 mi (10,617.15 km) |
| Santa Clara to Stamboliyski | 6,552.80 mi (10,545.71 km) |
| Santa Clara to Stara Zagora | 6,558.88 mi (10,555.50 km) |
| Santa Clara to Svilengrad | 6,612.55 mi (10,641.87 km) |
| Santa Clara to Svishtov | 6,478.51 mi (10,426.16 km) |
| Santa Clara to Targovishte | 6,527.65 mi (10,505.23 km) |
| Santa Clara to Teteven | 6,498.24 mi (10,457.90 km) |
| Santa Clara to Troyan | 6,510.34 mi (10,477.37 km) |
| Santa Clara to Tryavna | 6,528.54 mi (10,506.67 km) |
| Santa Clara to Tutrakan | 6,478.06 mi (10,425.44 km) |
| Santa Clara to Varna | 6,557.14 mi (10,552.70 km) |
