| Levelland to Smolyan | 6,251.94 mi (10,061.53 km) |
| Levelland to Sofia | 6,147.64 mi (9,893.68 km) |
| Levelland to Sopot | 6,198.58 mi (9,975.64 km) |
| Levelland to Sozopol | 6,308.61 mi (10,152.73 km) |
| Levelland to Sredets | 6,295.82 mi (10,132.14 km) |
| Levelland to Stamboliyski | 6,217.87 mi (10,006.70 km) |
| Levelland to Stara Zagora | 6,240.08 mi (10,042.43 km) |
| Levelland to Svilengrad | 6,293.36 mi (10,128.18 km) |
| Levelland to Svishtov | 6,168.52 mi (9,927.27 km) |
| Levelland to Targovishte | 6,228.14 mi (10,023.22 km) |
| Levelland to Teteven | 6,168.50 mi (9,927.25 km) |
| Levelland to Troyan | 6,185.41 mi (9,954.45 km) |
| Levelland to Tryavna | 6,212.48 mi (9,998.02 km) |
| Levelland to Tutrakan | 6,187.11 mi (9,957.19 km) |
| Levelland to Varna | 6,272.98 mi (10,095.39 km) |
