| Grand Prairie to Smolyan | 6,109.76 mi (9,832.70 km) |
| Grand Prairie to Sofia | 6,005.70 mi (9,665.24 km) |
| Grand Prairie to Sopot | 6,060.15 mi (9,752.87 km) |
| Grand Prairie to Sozopol | 6,177.34 mi (9,941.47 km) |
| Grand Prairie to Sredets | 6,162.95 mi (9,918.31 km) |
| Grand Prairie to Stamboliyski | 6,077.11 mi (9,780.17 km) |
| Grand Prairie to Stara Zagora | 6,103.30 mi (9,822.31 km) |
| Grand Prairie to Svilengrad | 6,155.82 mi (9,906.83 km) |
| Grand Prairie to Svishtov | 6,034.97 mi (9,712.35 km) |
| Grand Prairie to Targovishte | 6,096.62 mi (9,811.56 km) |
| Grand Prairie to Teteven | 6,029.73 mi (9,703.91 km) |
| Grand Prairie to Troyan | 6,047.69 mi (9,732.82 km) |
| Grand Prairie to Tryavna | 6,076.78 mi (9,779.63 km) |
| Grand Prairie to Tutrakan | 6,058.39 mi (9,750.03 km) |
| Grand Prairie to Varna | 6,144.97 mi (9,889.37 km) |
