| Bad Nenndorf to Navodari | 1,037.91 mi (1,670.35 km) |
| Bad Nenndorf to Negresti-Oas | 693.22 mi (1,115.63 km) |
| Bad Nenndorf to Nehoiu | 905.06 mi (1,456.56 km) |
| Bad Nenndorf to Ocna Mures | 768.25 mi (1,236.39 km) |
| Bad Nenndorf to Odobesti | 917.16 mi (1,476.03 km) |
| Bad Nenndorf to Odorheiu Secuiesc | 826.47 mi (1,330.07 km) |
| Bad Nenndorf to Oltenita | 973.90 mi (1,567.34 km) |
| Bad Nenndorf to Onesti | 885.86 mi (1,425.66 km) |
| Bad Nenndorf to Oradea | 666.75 mi (1,073.03 km) |
| Bad Nenndorf to Orastie | 767.31 mi (1,234.86 km) |
| Bad Nenndorf to Oravita | 752.66 mi (1,211.29 km) |
| Bad Nenndorf to Orsova | 792.43 mi (1,275.30 km) |
| Bad Nenndorf to Otelu Rosu | 752.29 mi (1,210.70 km) |
| Bad Nenndorf to Otopeni | 931.70 mi (1,499.43 km) |
| Bad Nenndorf to Ovidiu | 1,038.09 mi (1,670.65 km) |
