| Sugar Land to Smolyan | 6,221.31 mi (10,012.23 km) |
| Sugar Land to Sofia | 6,117.74 mi (9,845.56 km) |
| Sugar Land to Sopot | 6,174.51 mi (9,936.92 km) |
| Sugar Land to Sozopol | 6,296.30 mi (10,132.91 km) |
| Sugar Land to Sredets | 6,280.86 mi (10,108.07 km) |
| Sugar Land to Stamboliyski | 6,189.78 mi (9,961.49 km) |
| Sugar Land to Stara Zagora | 6,218.68 mi (10,008.00 km) |
| Sugar Land to Svilengrad | 6,270.50 mi (10,091.40 km) |
| Sugar Land to Svishtov | 6,152.80 mi (9,901.97 km) |
| Sugar Land to Targovishte | 6,215.65 mi (10,003.12 km) |
| Sugar Land to Teteven | 6,143.94 mi (9,887.71 km) |
| Sugar Land to Troyan | 6,162.59 mi (9,917.73 km) |
| Sugar Land to Tryavna | 6,192.98 mi (9,966.64 km) |
| Sugar Land to Tutrakan | 6,179.43 mi (9,944.83 km) |
| Sugar Land to Varna | 6,266.23 mi (10,084.53 km) |
