| Mack to Smolyan | 5,313.70 mi (8,551.57 km) |
| Mack to Sofia | 5,210.15 mi (8,384.92 km) |
| Mack to Sopot | 5,267.05 mi (8,476.50 km) |
| Mack to Sozopol | 5,389.45 mi (8,673.48 km) |
| Mack to Sredets | 5,373.82 mi (8,648.33 km) |
| Mack to Stamboliyski | 5,282.21 mi (8,500.89 km) |
| Mack to Stara Zagora | 5,311.31 mi (8,547.73 km) |
| Mack to Svilengrad | 5,363.06 mi (8,631.00 km) |
| Mack to Svishtov | 5,245.78 mi (8,442.27 km) |
| Mack to Targovishte | 5,308.84 mi (8,543.75 km) |
| Mack to Teteven | 5,236.46 mi (8,427.27 km) |
| Mack to Troyan | 5,255.18 mi (8,457.39 km) |
| Mack to Tryavna | 5,285.72 mi (8,506.54 km) |
| Mack to Tutrakan | 5,273.08 mi (8,486.20 km) |
| Mack to Varna | 5,359.91 mi (8,625.94 km) |
