| Avenel to Smolyan | 4,831.56 mi (7,775.65 km) |
| Avenel to Sofia | 4,729.26 mi (7,611.01 km) |
| Avenel to Sopot | 4,789.41 mi (7,707.82 km) |
| Avenel to Sozopol | 4,918.38 mi (7,915.37 km) |
| Avenel to Sredets | 4,901.17 mi (7,887.67 km) |
| Avenel to Stamboliyski | 4,801.90 mi (7,727.91 km) |
| Avenel to Stara Zagora | 4,835.02 mi (7,781.22 km) |
| Avenel to Svilengrad | 4,885.42 mi (7,862.32 km) |
| Avenel to Svishtov | 4,773.74 mi (7,682.59 km) |
| Avenel to Targovishte | 4,838.37 mi (7,786.61 km) |
| Avenel to Teteven | 4,758.75 mi (7,658.47 km) |
| Avenel to Troyan | 4,778.43 mi (7,690.15 km) |
| Avenel to Tryavna | 4,810.86 mi (7,742.33 km) |
| Avenel to Tutrakan | 4,806.15 mi (7,734.75 km) |
| Avenel to Varna | 4,892.80 mi (7,874.20 km) |
