| Helston to Smolyan | 1,544.87 mi (2,486.23 km) |
| Helston to Sofia | 1,444.64 mi (2,324.93 km) |
| Helston to Sopot | 1,508.55 mi (2,427.78 km) |
| Helston to Sozopol | 1,646.39 mi (2,649.61 km) |
| Helston to Sredets | 1,626.69 mi (2,617.91 km) |
| Helston to Stamboliyski | 1,517.42 mi (2,442.06 km) |
| Helston to Stara Zagora | 1,555.63 mi (2,503.55 km) |
| Helston to Svilengrad | 1,603.61 mi (2,580.77 km) |
| Helston to Svishtov | 1,502.32 mi (2,417.76 km) |
| Helston to Targovishte | 1,568.80 mi (2,524.75 km) |
| Helston to Teteven | 1,478.11 mi (2,378.78 km) |
| Helston to Troyan | 1,499.01 mi (2,412.42 km) |
| Helston to Tryavna | 1,533.99 mi (2,468.72 km) |
| Helston to Tutrakan | 1,544.45 mi (2,485.54 km) |
| Helston to Varna | 1,628.81 mi (2,621.31 km) |
