| Sermoneta to Smolyan | 605.23 mi (974.02 km) |
| Sermoneta to Sofia | 535.79 mi (862.27 km) |
| Sermoneta to Sopot | 607.49 mi (977.66 km) |
| Sermoneta to Sozopol | 757.26 mi (1,218.69 km) |
| Sermoneta to Sredets | 731.78 mi (1,177.68 km) |
| Sermoneta to Stamboliyski | 595.43 mi (958.25 km) |
| Sermoneta to Stara Zagora | 652.72 mi (1,050.45 km) |
| Sermoneta to Svilengrad | 681.75 mi (1,097.18 km) |
| Sermoneta to Svishtov | 644.47 mi (1,037.17 km) |
| Sermoneta to Targovishte | 702.95 mi (1,131.30 km) |
| Sermoneta to Teteven | 584.44 mi (940.57 km) |
| Sermoneta to Troyan | 606.92 mi (976.75 km) |
| Sermoneta to Tryavna | 646.39 mi (1,040.26 km) |
| Sermoneta to Tutrakan | 711.49 mi (1,145.04 km) |
| Sermoneta to Varna | 769.72 mi (1,238.75 km) |
