| Rorschach to Smolyan | 849.90 mi (1,367.78 km) |
| Rorschach to Sofia | 749.35 mi (1,205.96 km) |
| Rorschach to Sopot | 813.50 mi (1,309.21 km) |
| Rorschach to Sozopol | 953.22 mi (1,534.06 km) |
| Rorschach to Sredets | 932.85 mi (1,501.28 km) |
| Rorschach to Stamboliyski | 822.13 mi (1,323.10 km) |
| Rorschach to Stara Zagora | 860.78 mi (1,385.29 km) |
| Rorschach to Svilengrad | 908.38 mi (1,461.90 km) |
| Rorschach to Svishtov | 810.09 mi (1,303.72 km) |
| Rorschach to Targovishte | 876.88 mi (1,411.20 km) |
| Rorschach to Teteven | 783.13 mi (1,260.33 km) |
| Rorschach to Troyan | 804.23 mi (1,294.29 km) |
| Rorschach to Tryavna | 839.76 mi (1,351.47 km) |
| Rorschach to Tutrakan | 856.21 mi (1,377.94 km) |
| Rorschach to Varna | 938.71 mi (1,510.71 km) |
