| Detroit to Smolyan | 5,101.20 mi (8,209.59 km) |
| Detroit to Sofia | 4,997.34 mi (8,042.44 km) |
| Detroit to Sopot | 5,052.98 mi (8,131.99 km) |
| Detroit to Sozopol | 5,172.98 mi (8,325.11 km) |
| Detroit to Sredets | 5,157.90 mi (8,300.84 km) |
| Detroit to Stamboliyski | 5,069.08 mi (8,157.89 km) |
| Detroit to Stara Zagora | 5,096.71 mi (8,202.36 km) |
| Detroit to Svilengrad | 5,148.85 mi (8,286.28 km) |
| Detroit to Svishtov | 5,029.84 mi (8,094.74 km) |
| Detroit to Targovishte | 5,092.29 mi (8,195.25 km) |
| Detroit to Teteven | 5,022.47 mi (8,082.88 km) |
| Detroit to Troyan | 5,040.81 mi (8,112.40 km) |
| Detroit to Tryavna | 5,070.66 mi (8,160.43 km) |
| Detroit to Tutrakan | 5,055.46 mi (8,135.98 km) |
| Detroit to Varna | 5,142.23 mi (8,275.62 km) |
