| Mainz to Smolyan | 978.23 mi (1,574.30 km) |
| Mainz to Sofia | 874.61 mi (1,407.55 km) |
| Mainz to Sopot | 932.52 mi (1,500.75 km) |
| Mainz to Sozopol | 1,061.76 mi (1,708.74 km) |
| Mainz to Sredets | 1,043.99 mi (1,680.13 km) |
| Mainz to Stamboliyski | 946.73 mi (1,523.61 km) |
| Mainz to Stara Zagora | 977.73 mi (1,573.51 km) |
| Mainz to Svilengrad | 1,028.60 mi (1,655.37 km) |
| Mainz to Svishtov | 916.97 mi (1,475.72 km) |
| Mainz to Targovishte | 982.28 mi (1,580.83 km) |
| Mainz to Teteven | 901.87 mi (1,451.42 km) |
| Mainz to Troyan | 921.22 mi (1,482.57 km) |
| Mainz to Tryavna | 953.41 mi (1,534.37 km) |
| Mainz to Tutrakan | 953.34 mi (1,534.26 km) |
| Mainz to Varna | 1,039.17 mi (1,672.38 km) |
