| Chapel Hill to Smolyan | 5,236.16 mi (8,426.78 km) |
| Chapel Hill to Sofia | 5,134.31 mi (8,262.87 km) |
| Chapel Hill to Sopot | 5,195.27 mi (8,360.97 km) |
| Chapel Hill to Sozopol | 5,325.68 mi (8,570.86 km) |
| Chapel Hill to Sredets | 5,308.13 mi (8,542.60 km) |
| Chapel Hill to Stamboliyski | 5,207.03 mi (8,379.91 km) |
| Chapel Hill to Stara Zagora | 5,241.17 mi (8,434.85 km) |
| Chapel Hill to Svilengrad | 5,291.18 mi (8,515.33 km) |
| Chapel Hill to Svishtov | 5,180.94 mi (8,337.92 km) |
| Chapel Hill to Targovishte | 5,245.87 mi (8,442.41 km) |
| Chapel Hill to Teteven | 5,164.61 mi (8,311.64 km) |
| Chapel Hill to Troyan | 5,184.52 mi (8,343.68 km) |
| Chapel Hill to Tryavna | 5,217.39 mi (8,396.57 km) |
| Chapel Hill to Tutrakan | 5,214.40 mi (8,391.77 km) |
| Chapel Hill to Varna | 5,300.94 mi (8,531.04 km) |
