| Bad Nenndorf to Smolyan | 1,032.27 mi (1,661.28 km) |
| Bad Nenndorf to Sofia | 928.14 mi (1,493.69 km) |
| Bad Nenndorf to Sopot | 977.56 mi (1,573.23 km) |
| Bad Nenndorf to Sozopol | 1,092.20 mi (1,757.72 km) |
| Bad Nenndorf to Sredets | 1,077.61 mi (1,734.25 km) |
| Bad Nenndorf to Stamboliyski | 997.43 mi (1,605.22 km) |
| Bad Nenndorf to Stara Zagora | 1,019.30 mi (1,640.40 km) |
| Bad Nenndorf to Svilengrad | 1,072.42 mi (1,725.90 km) |
| Bad Nenndorf to Svishtov | 949.65 mi (1,528.31 km) |
| Bad Nenndorf to Targovishte | 1,011.48 mi (1,627.82 km) |
| Bad Nenndorf to Teteven | 947.52 mi (1,524.89 km) |
| Bad Nenndorf to Troyan | 964.42 mi (1,552.08 km) |
| Bad Nenndorf to Tryavna | 992.11 mi (1,596.65 km) |
| Bad Nenndorf to Tutrakan | 974.86 mi (1,568.88 km) |
| Bad Nenndorf to Varna | 1,061.69 mi (1,708.62 km) |
