| Opalenica to Smolyan | 836.49 mi (1,346.20 km) |
| Opalenica to Sofia | 737.36 mi (1,186.67 km) |
| Opalenica to Sopot | 771.38 mi (1,241.42 km) |
| Opalenica to Sozopol | 861.64 mi (1,386.67 km) |
| Opalenica to Sredets | 851.59 mi (1,370.50 km) |
| Opalenica to Stamboliyski | 798.45 mi (1,284.99 km) |
| Opalenica to Stara Zagora | 806.20 mi (1,297.46 km) |
| Opalenica to Svilengrad | 860.15 mi (1,384.28 km) |
| Opalenica to Svishtov | 727.88 mi (1,171.41 km) |
| Opalenica to Targovishte | 782.40 mi (1,259.14 km) |
| Opalenica to Teteven | 743.86 mi (1,197.13 km) |
| Opalenica to Troyan | 756.30 mi (1,217.15 km) |
| Opalenica to Tryavna | 776.35 mi (1,249.42 km) |
| Opalenica to Tutrakan | 737.81 mi (1,187.39 km) |
| Opalenica to Varna | 822.61 mi (1,323.86 km) |
