| Targu-Mures to Oberkirch | 779.23 mi (1,254.04 km) |
| Targu-Mures to Obernburg am Main | 744.29 mi (1,197.81 km) |
| Targu-Mures to Obernkirchen | 796.66 mi (1,282.10 km) |
| Targu-Mures to Oberschleissheim | 618.32 mi (995.08 km) |
| Targu-Mures to Oberstdorf | 675.02 mi (1,086.33 km) |
| Targu-Mures to Obertraubling | 598.80 mi (963.67 km) |
| Targu-Mures to Obertshausen | 761.00 mi (1,224.70 km) |
| Targu-Mures to Oberursel | 774.15 mi (1,245.88 km) |
| Targu-Mures to Ochsenfurt | 701.14 mi (1,128.38 km) |
| Targu-Mures to Ochsenhausen | 691.65 mi (1,113.11 km) |
| Targu-Mures to Ochtrup | 870.91 mi (1,401.59 km) |
| Targu-Mures to Odenthal | 849.98 mi (1,367.91 km) |
| Targu-Mures to Oelde | 823.80 mi (1,325.77 km) |
| Targu-Mures to Oelsnitz | 626.54 mi (1,008.32 km) |
| Targu-Mures to Oer-Erkenschwick | 856.03 mi (1,377.65 km) |
