| Bonneville to Smolyan | 960.92 mi (1,546.45 km) |
| Bonneville to Sofia | 865.96 mi (1,393.64 km) |
| Bonneville to Sopot | 934.47 mi (1,503.88 km) |
| Bonneville to Sozopol | 1,080.55 mi (1,738.98 km) |
| Bonneville to Sredets | 1,058.38 mi (1,703.30 km) |
| Bonneville to Stamboliyski | 937.60 mi (1,508.92 km) |
| Bonneville to Stara Zagora | 982.60 mi (1,581.34 km) |
| Bonneville to Svilengrad | 1,026.28 mi (1,651.63 km) |
| Bonneville to Svishtov | 941.35 mi (1,514.95 km) |
| Bonneville to Targovishte | 1,007.99 mi (1,622.20 km) |
| Bonneville to Teteven | 905.05 mi (1,456.54 km) |
| Bonneville to Troyan | 927.23 mi (1,492.24 km) |
| Bonneville to Tryavna | 964.90 mi (1,552.86 km) |
| Bonneville to Tutrakan | 993.72 mi (1,599.23 km) |
| Bonneville to Varna | 1,072.50 mi (1,726.02 km) |
