| Preakness to Smolyan | 4,814.53 mi (7,748.24 km) |
| Preakness to Sofia | 4,712.13 mi (7,583.44 km) |
| Preakness to Sopot | 4,772.09 mi (7,679.94 km) |
| Preakness to Sozopol | 4,900.70 mi (7,886.91 km) |
| Preakness to Sredets | 4,883.57 mi (7,859.35 km) |
| Preakness to Stamboliyski | 4,784.75 mi (7,700.30 km) |
| Preakness to Stara Zagora | 4,817.63 mi (7,753.22 km) |
| Preakness to Svilengrad | 4,868.11 mi (7,834.47 km) |
| Preakness to Svishtov | 4,756.08 mi (7,654.17 km) |
| Preakness to Targovishte | 4,820.64 mi (7,758.07 km) |
| Preakness to Teteven | 4,741.43 mi (7,630.59 km) |
| Preakness to Troyan | 4,761.06 mi (7,662.18 km) |
| Preakness to Tryavna | 4,793.38 mi (7,714.20 km) |
| Preakness to Tutrakan | 4,788.21 mi (7,705.88 km) |
| Preakness to Varna | 4,874.88 mi (7,845.37 km) |
