| Conroe to Smolyan | 6,176.87 mi (9,940.71 km) |
| Conroe to Sofia | 6,073.22 mi (9,773.90 km) |
| Conroe to Sopot | 6,129.70 mi (9,864.80 km) |
| Conroe to Sozopol | 6,250.93 mi (10,059.91 km) |
| Conroe to Sredets | 6,235.62 mi (10,035.26 km) |
| Conroe to Stamboliyski | 6,145.19 mi (9,889.73 km) |
| Conroe to Stara Zagora | 6,173.75 mi (9,935.69 km) |
| Conroe to Svilengrad | 6,225.67 mi (10,019.24 km) |
| Conroe to Svishtov | 6,107.55 mi (9,829.16 km) |
| Conroe to Targovishte | 6,170.27 mi (9,930.08 km) |
| Conroe to Teteven | 6,099.14 mi (9,815.62 km) |
| Conroe to Troyan | 6,117.71 mi (9,845.50 km) |
| Conroe to Tryavna | 6,147.95 mi (9,894.16 km) |
| Conroe to Tutrakan | 6,133.80 mi (9,871.39 km) |
| Conroe to Varna | 6,220.59 mi (10,011.07 km) |
