| Prineville to Smolyan | 6,131.23 mi (9,867.26 km) |
| Prineville to Sofia | 6,032.01 mi (9,707.58 km) |
| Prineville to Sopot | 6,064.87 mi (9,760.46 km) |
| Prineville to Sozopol | 6,138.15 mi (9,878.39 km) |
| Prineville to Sredets | 6,132.82 mi (9,869.82 km) |
| Prineville to Stamboliyski | 6,093.01 mi (9,805.76 km) |
| Prineville to Stara Zagora | 6,096.91 mi (9,812.03 km) |
| Prineville to Svilengrad | 6,150.33 mi (9,898.01 km) |
| Prineville to Svishtov | 6,015.84 mi (9,681.57 km) |
| Prineville to Targovishte | 6,063.41 mi (9,758.11 km) |
| Prineville to Teteven | 6,038.06 mi (9,717.32 km) |
| Prineville to Troyan | 6,049.44 mi (9,735.64 km) |
| Prineville to Tryavna | 6,066.38 mi (9,762.90 km) |
| Prineville to Tutrakan | 6,013.05 mi (9,677.06 km) |
| Prineville to Varna | 6,090.93 mi (9,802.41 km) |
