| Danbury to Smolyan | 4,763.95 mi (7,666.84 km) |
| Danbury to Sofia | 4,661.55 mi (7,502.03 km) |
| Danbury to Sopot | 4,721.50 mi (7,598.52 km) |
| Danbury to Sozopol | 4,850.11 mi (7,805.49 km) |
| Danbury to Sredets | 4,832.98 mi (7,777.93 km) |
| Danbury to Stamboliyski | 4,734.16 mi (7,618.90 km) |
| Danbury to Stara Zagora | 4,767.04 mi (7,671.80 km) |
| Danbury to Svilengrad | 4,817.52 mi (7,753.05 km) |
| Danbury to Svishtov | 4,705.49 mi (7,572.75 km) |
| Danbury to Targovishte | 4,770.05 mi (7,676.65 km) |
| Danbury to Teteven | 4,690.84 mi (7,549.18 km) |
| Danbury to Troyan | 4,710.46 mi (7,580.76 km) |
| Danbury to Tryavna | 4,742.78 mi (7,632.77 km) |
| Danbury to Tutrakan | 4,737.63 mi (7,624.49 km) |
| Danbury to Varna | 4,824.31 mi (7,763.97 km) |
