| Mastic to Smolyan | 4,763.07 mi (7,665.41 km) |
| Mastic to Sofia | 4,660.95 mi (7,501.07 km) |
| Mastic to Sopot | 4,721.47 mi (7,598.47 km) |
| Mastic to Sozopol | 4,851.18 mi (7,807.22 km) |
| Mastic to Sredets | 4,833.78 mi (7,779.22 km) |
| Mastic to Stamboliyski | 4,733.63 mi (7,618.04 km) |
| Mastic to Stara Zagora | 4,767.22 mi (7,672.10 km) |
| Mastic to Svilengrad | 4,817.44 mi (7,752.91 km) |
| Mastic to Svishtov | 4,706.48 mi (7,574.34 km) |
| Mastic to Targovishte | 4,771.28 mi (7,678.63 km) |
| Mastic to Teteven | 4,690.81 mi (7,549.13 km) |
| Mastic to Troyan | 4,710.60 mi (7,580.98 km) |
| Mastic to Tryavna | 4,743.25 mi (7,633.52 km) |
| Mastic to Tutrakan | 4,739.50 mi (7,627.48 km) |
| Mastic to Varna | 4,826.08 mi (7,766.83 km) |
