| National City to Smolyan | 6,760.89 mi (10,880.60 km) |
| National City to Sofia | 6,658.21 mi (10,715.35 km) |
| National City to Sopot | 6,699.49 mi (10,781.79 km) |
| National City to Sozopol | 6,789.57 mi (10,926.76 km) |
| National City to Sredets | 6,780.99 mi (10,912.95 km) |
| National City to Stamboliyski | 6,724.06 mi (10,821.33 km) |
| National City to Stara Zagora | 6,736.07 mi (10,840.65 km) |
| National City to Svilengrad | 6,790.07 mi (10,927.56 km) |
| National City to Svishtov | 6,658.18 mi (10,715.30 km) |
| National City to Targovishte | 6,711.50 mi (10,801.12 km) |
| National City to Teteven | 6,670.92 mi (10,735.81 km) |
| National City to Troyan | 6,684.88 mi (10,758.27 km) |
| National City to Tryavna | 6,706.46 mi (10,793.00 km) |
| National City to Tutrakan | 6,664.53 mi (10,725.53 km) |
| National City to Varna | 6,746.71 mi (10,857.78 km) |
