| Middletown to Smolyan | 5,284.71 mi (8,504.92 km) |
| Middletown to Sofia | 5,181.14 mi (8,338.23 km) |
| Middletown to Sopot | 5,237.97 mi (8,429.69 km) |
| Middletown to Sozopol | 5,360.24 mi (8,626.47 km) |
| Middletown to Sredets | 5,344.65 mi (8,601.38 km) |
| Middletown to Stamboliyski | 5,253.18 mi (8,454.17 km) |
| Middletown to Stara Zagora | 5,282.20 mi (8,500.88 km) |
| Middletown to Svilengrad | 5,333.97 mi (8,584.19 km) |
| Middletown to Svishtov | 5,216.60 mi (8,395.30 km) |
| Middletown to Targovishte | 5,279.62 mi (8,496.73 km) |
| Middletown to Teteven | 5,207.38 mi (8,380.48 km) |
| Middletown to Troyan | 5,226.08 mi (8,410.56 km) |
| Middletown to Tryavna | 5,256.58 mi (8,459.65 km) |
| Middletown to Tutrakan | 5,243.81 mi (8,439.10 km) |
| Middletown to Varna | 5,330.64 mi (8,578.83 km) |
