| Neu Isenburg to Smolyan | 964.03 mi (1,551.46 km) |
| Neu Isenburg to Sofia | 860.24 mi (1,384.43 km) |
| Neu Isenburg to Sopot | 917.51 mi (1,476.59 km) |
| Neu Isenburg to Sozopol | 1,045.75 mi (1,682.98 km) |
| Neu Isenburg to Sredets | 1,028.20 mi (1,654.72 km) |
| Neu Isenburg to Stamboliyski | 932.20 mi (1,500.24 km) |
| Neu Isenburg to Stara Zagora | 962.49 mi (1,548.97 km) |
| Neu Isenburg to Svilengrad | 1,013.59 mi (1,631.21 km) |
| Neu Isenburg to Svishtov | 900.99 mi (1,450.00 km) |
| Neu Isenburg to Targovishte | 966.12 mi (1,554.82 km) |
| Neu Isenburg to Teteven | 886.87 mi (1,427.28 km) |
| Neu Isenburg to Troyan | 906.05 mi (1,458.14 km) |
| Neu Isenburg to Tryavna | 937.92 mi (1,509.44 km) |
| Neu Isenburg to Tutrakan | 936.64 mi (1,507.37 km) |
| Neu Isenburg to Varna | 1,022.60 mi (1,645.71 km) |
