| Opmeer to Smolyan | 1,197.81 mi (1,927.69 km) |
| Opmeer to Sofia | 1,093.55 mi (1,759.90 km) |
| Opmeer to Sopot | 1,147.18 mi (1,846.21 km) |
| Opmeer to Sozopol | 1,268.11 mi (2,040.82 km) |
| Opmeer to Sredets | 1,252.29 mi (2,015.37 km) |
| Opmeer to Stamboliyski | 1,164.49 mi (1,874.07 km) |
| Opmeer to Stara Zagora | 1,190.58 mi (1,916.06 km) |
| Opmeer to Svilengrad | 1,242.90 mi (2,000.26 km) |
| Opmeer to Svishtov | 1,124.26 mi (1,809.32 km) |
| Opmeer to Targovishte | 1,187.59 mi (1,911.24 km) |
| Opmeer to Teteven | 1,116.75 mi (1,797.24 km) |
| Opmeer to Troyan | 1,134.80 mi (1,826.29 km) |
| Opmeer to Tryavna | 1,164.50 mi (1,874.08 km) |
| Opmeer to Tutrakan | 1,153.44 mi (1,856.28 km) |
| Opmeer to Varna | 1,240.21 mi (1,995.93 km) |
