| Fribourg to Smolyan | 938.59 mi (1,510.52 km) |
| Fribourg to Sofia | 841.10 mi (1,353.61 km) |
| Fribourg to Sopot | 908.02 mi (1,461.31 km) |
| Fribourg to Sozopol | 1,051.73 mi (1,692.60 km) |
| Fribourg to Sredets | 1,030.29 mi (1,658.09 km) |
| Fribourg to Stamboliyski | 913.41 mi (1,470.00 km) |
| Fribourg to Stara Zagora | 955.91 mi (1,538.39 km) |
| Fribourg to Svilengrad | 1,001.32 mi (1,611.46 km) |
| Fribourg to Svishtov | 910.56 mi (1,465.41 km) |
| Fribourg to Targovishte | 977.41 mi (1,572.98 km) |
| Fribourg to Teteven | 878.12 mi (1,413.20 km) |
| Fribourg to Troyan | 899.92 mi (1,448.28 km) |
| Fribourg to Tryavna | 936.78 mi (1,507.60 km) |
| Fribourg to Tutrakan | 960.29 mi (1,545.44 km) |
| Fribourg to Varna | 1,040.86 mi (1,675.09 km) |
