| Sulphur to Smolyan | 6,098.94 mi (9,815.30 km) |
| Sulphur to Sofia | 5,995.63 mi (9,649.03 km) |
| Sulphur to Sopot | 6,053.24 mi (9,741.75 km) |
| Sulphur to Sozopol | 6,176.76 mi (9,940.53 km) |
| Sulphur to Sredets | 6,160.91 mi (9,915.02 km) |
| Sulphur to Stamboliyski | 6,067.85 mi (9,765.27 km) |
| Sulphur to Stara Zagora | 6,097.77 mi (9,813.42 km) |
| Sulphur to Svilengrad | 6,149.29 mi (9,896.33 km) |
| Sulphur to Svishtov | 6,032.90 mi (9,709.02 km) |
| Sulphur to Targovishte | 6,096.20 mi (9,810.88 km) |
| Sulphur to Teteven | 6,022.63 mi (9,692.48 km) |
| Sulphur to Troyan | 6,041.53 mi (9,722.91 km) |
| Sulphur to Tryavna | 6,072.42 mi (9,772.61 km) |
| Sulphur to Tutrakan | 6,060.83 mi (9,753.96 km) |
| Sulphur to Varna | 6,147.67 mi (9,893.71 km) |
