| San Luis to Smolyan | 6,704.86 mi (10,790.43 km) |
| San Luis to Sofia | 6,601.64 mi (10,624.31 km) |
| San Luis to Sopot | 6,644.83 mi (10,693.82 km) |
| San Luis to Sozopol | 6,738.85 mi (10,845.13 km) |
| San Luis to Sredets | 6,729.46 mi (10,830.03 km) |
| San Luis to Stamboliyski | 6,668.47 mi (10,731.86 km) |
| San Luis to Stara Zagora | 6,682.41 mi (10,754.30 km) |
| San Luis to Svilengrad | 6,736.40 mi (10,841.20 km) |
| San Luis to Svishtov | 6,605.52 mi (10,630.56 km) |
| San Luis to Targovishte | 6,660.15 mi (10,718.47 km) |
| San Luis to Teteven | 6,615.91 mi (10,647.28 km) |
| San Luis to Troyan | 6,630.45 mi (10,670.68 km) |
| San Luis to Tryavna | 6,653.11 mi (10,707.15 km) |
| San Luis to Tutrakan | 6,614.17 mi (10,644.47 km) |
| San Luis to Varna | 6,697.23 mi (10,778.15 km) |
