| Oak Forest to Smolyan | 5,311.48 mi (8,548.01 km) |
| Oak Forest to Sofia | 5,207.36 mi (8,380.44 km) |
| Oak Forest to Sopot | 5,261.44 mi (8,467.47 km) |
| Oak Forest to Sozopol | 5,378.24 mi (8,655.45 km) |
| Oak Forest to Sredets | 5,363.90 mi (8,632.37 km) |
| Oak Forest to Stamboliyski | 5,278.65 mi (8,495.17 km) |
| Oak Forest to Stara Zagora | 5,304.46 mi (8,536.71 km) |
| Oak Forest to Svilengrad | 5,357.05 mi (8,621.34 km) |
| Oak Forest to Svishtov | 5,235.94 mi (8,426.43 km) |
| Oak Forest to Targovishte | 5,297.52 mi (8,525.54 km) |
| Oak Forest to Teteven | 5,231.05 mi (8,418.56 km) |
| Oak Forest to Troyan | 5,248.92 mi (8,447.32 km) |
| Oak Forest to Tryavna | 5,277.86 mi (8,493.90 km) |
| Oak Forest to Tutrakan | 5,259.27 mi (8,463.97 km) |
| Oak Forest to Varna | 5,345.86 mi (8,603.32 km) |
