| Sunbury to Smolyan | 1,364.76 mi (2,196.36 km) |
| Sunbury to Sofia | 1,262.08 mi (2,031.12 km) |
| Sunbury to Sopot | 1,322.22 mi (2,127.90 km) |
| Sunbury to Sozopol | 1,453.87 mi (2,339.77 km) |
| Sunbury to Sredets | 1,435.68 mi (2,310.51 km) |
| Sunbury to Stamboliyski | 1,334.66 mi (2,147.92 km) |
| Sunbury to Stara Zagora | 1,368.09 mi (2,201.72 km) |
| Sunbury to Svilengrad | 1,418.18 mi (2,282.33 km) |
| Sunbury to Svishtov | 1,309.08 mi (2,106.77 km) |
| Sunbury to Targovishte | 1,374.66 mi (2,212.30 km) |
| Sunbury to Teteven | 1,291.56 mi (2,078.57 km) |
| Sunbury to Troyan | 1,311.43 mi (2,110.55 km) |
| Sunbury to Tryavna | 1,344.47 mi (2,163.72 km) |
| Sunbury to Tutrakan | 1,346.17 mi (2,166.45 km) |
| Sunbury to Varna | 1,431.93 mi (2,304.47 km) |
