| Monthey to Smolyan | 937.97 mi (1,509.52 km) |
| Monthey to Sofia | 842.22 mi (1,355.42 km) |
| Monthey to Sopot | 910.29 mi (1,464.97 km) |
| Monthey to Sozopol | 1,055.76 mi (1,699.09 km) |
| Monthey to Sredets | 1,033.79 mi (1,663.72 km) |
| Monthey to Stamboliyski | 914.08 mi (1,471.07 km) |
| Monthey to Stara Zagora | 958.37 mi (1,542.35 km) |
| Monthey to Svilengrad | 1,002.56 mi (1,613.47 km) |
| Monthey to Svishtov | 916.00 mi (1,474.16 km) |
| Monthey to Targovishte | 982.71 mi (1,581.52 km) |
| Monthey to Teteven | 880.73 mi (1,417.40 km) |
| Monthey to Troyan | 902.81 mi (1,452.94 km) |
| Monthey to Tryavna | 940.27 mi (1,513.22 km) |
| Monthey to Tutrakan | 967.72 mi (1,557.40 km) |
| Monthey to Varna | 1,046.97 mi (1,684.93 km) |
