| Vacaville to Smolyan | 6,528.12 mi (10,505.99 km) |
| Vacaville to Sofia | 6,427.96 mi (10,344.81 km) |
| Vacaville to Sopot | 6,462.74 mi (10,400.78 km) |
| Vacaville to Sozopol | 6,539.64 mi (10,524.53 km) |
| Vacaville to Sredets | 6,533.65 mi (10,514.89 km) |
| Vacaville to Stamboliyski | 6,490.15 mi (10,444.89 km) |
| Vacaville to Stara Zagora | 6,495.81 mi (10,453.99 km) |
| Vacaville to Svilengrad | 6,549.44 mi (10,540.30 km) |
| Vacaville to Svishtov | 6,415.30 mi (10,324.42 km) |
| Vacaville to Targovishte | 6,464.13 mi (10,403.00 km) |
| Vacaville to Teteven | 6,435.51 mi (10,356.95 km) |
| Vacaville to Troyan | 6,447.47 mi (10,376.20 km) |
| Vacaville to Tryavna | 6,465.43 mi (10,405.10 km) |
| Vacaville to Tutrakan | 6,414.38 mi (10,322.95 km) |
| Vacaville to Varna | 6,493.23 mi (10,449.84 km) |
