| Bad Neuenahr-Ahrweiler to Navodari | 1,087.99 mi (1,750.94 km) |
| Bad Neuenahr-Ahrweiler to Negresti-Oas | 757.42 mi (1,218.95 km) |
| Bad Neuenahr-Ahrweiler to Nehoiu | 954.40 mi (1,535.97 km) |
| Bad Neuenahr-Ahrweiler to Ocna Mures | 816.95 mi (1,314.75 km) |
| Bad Neuenahr-Ahrweiler to Odobesti | 973.53 mi (1,566.75 km) |
| Bad Neuenahr-Ahrweiler to Odorheiu Secuiesc | 880.91 mi (1,417.69 km) |
| Bad Neuenahr-Ahrweiler to Oltenita | 1,013.44 mi (1,630.97 km) |
| Bad Neuenahr-Ahrweiler to Onesti | 945.71 mi (1,521.97 km) |
| Bad Neuenahr-Ahrweiler to Oradea | 713.77 mi (1,148.69 km) |
| Bad Neuenahr-Ahrweiler to Orastie | 806.63 mi (1,298.15 km) |
| Bad Neuenahr-Ahrweiler to Oravita | 774.06 mi (1,245.73 km) |
| Bad Neuenahr-Ahrweiler to Orsova | 815.06 mi (1,311.71 km) |
| Bad Neuenahr-Ahrweiler to Otelu Rosu | 783.12 mi (1,260.31 km) |
| Bad Neuenahr-Ahrweiler to Otopeni | 972.62 mi (1,565.28 km) |
| Bad Neuenahr-Ahrweiler to Ovidiu | 1,087.54 mi (1,750.23 km) |
