| Nidderau to Smolyan | 963.78 mi (1,551.06 km) |
| Nidderau to Sofia | 859.83 mi (1,383.76 km) |
| Nidderau to Sopot | 916.26 mi (1,474.58 km) |
| Nidderau to Sozopol | 1,043.14 mi (1,678.78 km) |
| Nidderau to Sredets | 1,025.89 mi (1,651.02 km) |
| Nidderau to Stamboliyski | 931.57 mi (1,499.22 km) |
| Nidderau to Stara Zagora | 960.93 mi (1,546.47 km) |
| Nidderau to Svilengrad | 1,012.31 mi (1,629.16 km) |
| Nidderau to Svishtov | 898.45 mi (1,445.92 km) |
| Nidderau to Targovishte | 963.31 mi (1,550.29 km) |
| Nidderau to Teteven | 885.65 mi (1,425.32 km) |
| Nidderau to Troyan | 904.60 mi (1,455.81 km) |
| Nidderau to Tryavna | 936.04 mi (1,506.41 km) |
| Nidderau to Tutrakan | 933.03 mi (1,501.56 km) |
| Nidderau to Varna | 1,019.18 mi (1,640.21 km) |
