| Mason to Smolyan | 5,289.18 mi (8,512.11 km) |
| Mason to Sofia | 5,185.63 mi (8,345.47 km) |
| Mason to Sopot | 5,242.58 mi (8,437.11 km) |
| Mason to Sozopol | 5,365.07 mi (8,634.24 km) |
| Mason to Sredets | 5,349.42 mi (8,609.07 km) |
| Mason to Stamboliyski | 5,257.70 mi (8,461.46 km) |
| Mason to Stara Zagora | 5,286.86 mi (8,508.38 km) |
| Mason to Svilengrad | 5,338.59 mi (8,591.63 km) |
| Mason to Svishtov | 5,221.38 mi (8,403.00 km) |
| Mason to Targovishte | 5,284.46 mi (8,504.52 km) |
| Mason to Teteven | 5,211.99 mi (8,387.89 km) |
| Mason to Troyan | 5,230.72 mi (8,418.02 km) |
| Mason to Tryavna | 5,261.28 mi (8,467.21 km) |
| Mason to Tutrakan | 5,248.76 mi (8,447.06 km) |
| Mason to Varna | 5,335.59 mi (8,586.79 km) |
