| Bluffton to Smolyan | 5,488.69 mi (8,833.20 km) |
| Bluffton to Sofia | 5,387.57 mi (8,670.46 km) |
| Bluffton to Sopot | 5,449.66 mi (8,770.37 km) |
| Bluffton to Sozopol | 5,582.20 mi (8,983.69 km) |
| Bluffton to Sredets | 5,564.12 mi (8,954.58 km) |
| Bluffton to Stamboliyski | 5,460.37 mi (8,787.61 km) |
| Bluffton to Stara Zagora | 5,495.97 mi (8,844.91 km) |
| Bluffton to Svilengrad | 5,545.36 mi (8,924.40 km) |
| Bluffton to Svishtov | 5,437.41 mi (8,750.66 km) |
| Bluffton to Targovishte | 5,502.76 mi (8,855.83 km) |
| Bluffton to Teteven | 5,419.04 mi (8,721.11 km) |
| Bluffton to Troyan | 5,439.27 mi (8,753.67 km) |
| Bluffton to Tryavna | 5,472.77 mi (8,807.57 km) |
| Bluffton to Tutrakan | 5,472.55 mi (8,807.21 km) |
| Bluffton to Varna | 5,558.86 mi (8,946.13 km) |
