| Brownsville to Smolyan | 6,483.49 mi (10,434.17 km) |
| Brownsville to Sofia | 6,380.17 mi (10,267.89 km) |
| Brownsville to Sopot | 6,437.73 mi (10,360.52 km) |
| Brownsville to Sozopol | 6,561.00 mi (10,558.91 km) |
| Brownsville to Sredets | 6,545.23 mi (10,533.52 km) |
| Brownsville to Stamboliyski | 6,452.39 mi (10,384.11 km) |
| Brownsville to Stara Zagora | 6,482.23 mi (10,432.13 km) |
| Brownsville to Svilengrad | 6,533.78 mi (10,515.09 km) |
| Brownsville to Svishtov | 6,417.21 mi (10,327.50 km) |
| Brownsville to Targovishte | 6,480.42 mi (10,429.23 km) |
| Brownsville to Teteven | 6,407.12 mi (10,311.26 km) |
| Brownsville to Troyan | 6,426.00 mi (10,341.64 km) |
| Brownsville to Tryavna | 6,456.83 mi (10,391.26 km) |
| Brownsville to Tutrakan | 6,444.86 mi (10,372.00 km) |
| Brownsville to Varna | 6,531.69 mi (10,511.74 km) |
