| Portage to Smolyan | 5,203.09 mi (8,373.56 km) |
| Portage to Sofia | 5,099.05 mi (8,206.13 km) |
| Portage to Sopot | 5,153.74 mi (8,294.14 km) |
| Portage to Sozopol | 5,271.80 mi (8,484.14 km) |
| Portage to Sredets | 5,257.16 mi (8,460.59 km) |
| Portage to Stamboliyski | 5,170.52 mi (8,321.16 km) |
| Portage to Stara Zagora | 5,197.04 mi (8,363.82 km) |
| Portage to Svilengrad | 5,249.46 mi (8,448.19 km) |
| Portage to Svishtov | 5,129.14 mi (8,254.56 km) |
| Portage to Targovishte | 5,191.07 mi (8,354.23 km) |
| Portage to Teteven | 5,123.29 mi (8,245.14 km) |
| Portage to Troyan | 5,141.35 mi (8,274.20 km) |
| Portage to Tryavna | 5,170.64 mi (8,321.35 km) |
| Portage to Tutrakan | 5,153.37 mi (8,293.55 km) |
| Portage to Varna | 5,240.04 mi (8,433.03 km) |
