| Wilsonville to Smolyan | 6,106.16 mi (9,826.91 km) |
| Wilsonville to Sofia | 6,007.91 mi (9,668.79 km) |
| Wilsonville to Sopot | 6,038.90 mi (9,718.67 km) |
| Wilsonville to Sozopol | 6,108.36 mi (9,830.46 km) |
| Wilsonville to Sredets | 6,103.76 mi (9,823.06 km) |
| Wilsonville to Stamboliyski | 6,067.74 mi (9,765.09 km) |
| Wilsonville to Stara Zagora | 6,069.89 mi (9,768.55 km) |
| Wilsonville to Svilengrad | 6,123.07 mi (9,854.13 km) |
| Wilsonville to Svishtov | 5,988.33 mi (9,637.28 km) |
| Wilsonville to Targovishte | 6,034.53 mi (9,711.63 km) |
| Wilsonville to Teteven | 6,012.53 mi (9,676.23 km) |
| Wilsonville to Troyan | 6,023.34 mi (9,693.63 km) |
| Wilsonville to Tryavna | 6,039.24 mi (9,719.21 km) |
| Wilsonville to Tutrakan | 5,983.53 mi (9,629.56 km) |
| Wilsonville to Varna | 6,060.29 mi (9,753.09 km) |
