| Ordu to Oberkirch | 1,540.58 mi (2,479.33 km) |
| Ordu to Obernburg am Main | 1,510.41 mi (2,430.77 km) |
| Ordu to Obernkirchen | 1,556.86 mi (2,505.52 km) |
| Ordu to Oberschleissheim | 1,379.81 mi (2,220.59 km) |
| Ordu to Oberstdorf | 1,428.90 mi (2,299.59 km) |
| Ordu to Obertraubling | 1,364.04 mi (2,195.22 km) |
| Ordu to Obertshausen | 1,527.27 mi (2,457.91 km) |
| Ordu to Oberursel | 1,540.47 mi (2,479.14 km) |
| Ordu to Ochsenfurt | 1,467.19 mi (2,361.22 km) |
| Ordu to Ochsenhausen | 1,450.97 mi (2,335.10 km) |
| Ordu to Ochtrup | 1,633.47 mi (2,628.82 km) |
| Ordu to Odenthal | 1,615.92 mi (2,600.57 km) |
| Ordu to Oelde | 1,587.10 mi (2,554.19 km) |
| Ordu to Oelsnitz | 1,391.79 mi (2,239.87 km) |
| Ordu to Oer-Erkenschwick | 1,620.59 mi (2,608.09 km) |
