| Aci Catena to Smolyan | 578.48 mi (930.97 km) |
| Aci Catena to Sofia | 557.71 mi (897.54 km) |
| Aci Catena to Sopot | 615.71 mi (990.89 km) |
| Aci Catena to Sozopol | 742.64 mi (1,195.16 km) |
| Aci Catena to Sredets | 717.33 mi (1,154.43 km) |
| Aci Catena to Stamboliyski | 588.20 mi (946.61 km) |
| Aci Catena to Stara Zagora | 648.29 mi (1,043.32 km) |
| Aci Catena to Svilengrad | 654.41 mi (1,053.17 km) |
| Aci Catena to Svishtov | 677.38 mi (1,090.14 km) |
| Aci Catena to Targovishte | 716.69 mi (1,153.41 km) |
| Aci Catena to Teteven | 605.09 mi (973.80 km) |
| Aci Catena to Troyan | 622.82 mi (1,002.33 km) |
| Aci Catena to Tryavna | 656.07 mi (1,055.85 km) |
| Aci Catena to Tutrakan | 746.54 mi (1,201.45 km) |
| Aci Catena to Varna | 775.23 mi (1,247.61 km) |
