| Helena to Smolyan | 5,789.90 mi (9,317.95 km) |
| Helena to Sofia | 5,688.51 mi (9,154.77 km) |
| Helena to Sopot | 5,726.22 mi (9,215.46 km) |
| Helena to Sozopol | 5,809.70 mi (9,349.80 km) |
| Helena to Sredets | 5,802.36 mi (9,337.99 km) |
| Helena to Stamboliyski | 5,752.38 mi (9,257.57 km) |
| Helena to Stara Zagora | 5,760.97 mi (9,271.39 km) |
| Helena to Svilengrad | 5,814.85 mi (9,358.10 km) |
| Helena to Svishtov | 5,681.62 mi (9,143.68 km) |
| Helena to Targovishte | 5,732.76 mi (9,225.99 km) |
| Helena to Teteven | 5,698.34 mi (9,170.59 km) |
| Helena to Troyan | 5,711.23 mi (9,191.34 km) |
| Helena to Tryavna | 5,730.92 mi (9,223.02 km) |
| Helena to Tutrakan | 5,684.39 mi (9,148.14 km) |
| Helena to Varna | 5,765.12 mi (9,278.06 km) |
