| Ostringen to Smolyan | 935.11 mi (1,504.91 km) |
| Ostringen to Sofia | 832.06 mi (1,339.08 km) |
| Ostringen to Sopot | 891.80 mi (1,435.21 km) |
| Ostringen to Sozopol | 1,024.21 mi (1,648.30 km) |
| Ostringen to Sredets | 1,005.68 mi (1,618.48 km) |
| Ostringen to Stamboliyski | 904.54 mi (1,455.72 km) |
| Ostringen to Stara Zagora | 937.68 mi (1,509.05 km) |
| Ostringen to Svilengrad | 987.77 mi (1,589.66 km) |
| Ostringen to Svishtov | 879.51 mi (1,415.43 km) |
| Ostringen to Targovishte | 945.41 mi (1,521.49 km) |
| Ostringen to Teteven | 861.14 mi (1,385.87 km) |
| Ostringen to Troyan | 881.02 mi (1,417.86 km) |
| Ostringen to Tryavna | 914.20 mi (1,471.26 km) |
| Ostringen to Tutrakan | 918.68 mi (1,478.48 km) |
| Ostringen to Varna | 1,003.81 mi (1,615.48 km) |
