| Ottweiler to Navodari | 1,067.46 mi (1,717.91 km) |
| Ottweiler to Negresti-Oas | 748.25 mi (1,204.20 km) |
| Ottweiler to Nehoiu | 934.72 mi (1,504.29 km) |
| Ottweiler to Ocna Mures | 798.61 mi (1,285.24 km) |
| Ottweiler to Odobesti | 957.35 mi (1,540.71 km) |
| Ottweiler to Odorheiu Secuiesc | 864.74 mi (1,391.66 km) |
| Ottweiler to Oltenita | 988.15 mi (1,590.27 km) |
| Ottweiler to Onesti | 931.68 mi (1,499.39 km) |
| Ottweiler to Oradea | 696.25 mi (1,120.51 km) |
| Ottweiler to Orastie | 783.62 mi (1,261.11 km) |
| Ottweiler to Oravita | 742.63 mi (1,195.15 km) |
| Ottweiler to Orsova | 783.63 mi (1,261.13 km) |
| Ottweiler to Otelu Rosu | 756.19 mi (1,216.96 km) |
| Ottweiler to Otopeni | 948.42 mi (1,526.33 km) |
| Ottweiler to Ovidiu | 1,066.70 mi (1,716.68 km) |
