| Sidmouth to Smolyan | 1,466.34 mi (2,359.85 km) |
| Sidmouth to Sofia | 1,365.02 mi (2,196.79 km) |
| Sidmouth to Sopot | 1,427.54 mi (2,297.40 km) |
| Sidmouth to Sozopol | 1,563.08 mi (2,515.54 km) |
| Sidmouth to Sredets | 1,543.96 mi (2,484.77 km) |
| Sidmouth to Stamboliyski | 1,437.82 mi (2,313.95 km) |
| Sidmouth to Stara Zagora | 1,474.19 mi (2,372.49 km) |
| Sidmouth to Svilengrad | 1,523.06 mi (2,451.12 km) |
| Sidmouth to Svishtov | 1,418.60 mi (2,283.02 km) |
| Sidmouth to Targovishte | 1,484.79 mi (2,389.54 km) |
| Sidmouth to Teteven | 1,396.97 mi (2,248.21 km) |
| Sidmouth to Troyan | 1,417.50 mi (2,281.24 km) |
| Sidmouth to Tryavna | 1,451.75 mi (2,336.37 km) |
| Sidmouth to Tutrakan | 1,458.80 mi (2,347.71 km) |
| Sidmouth to Varna | 1,543.77 mi (2,484.47 km) |
