| Cristuru Secuiesc to Oberkirch | 805.84 mi (1,296.87 km) |
| Cristuru Secuiesc to Obernburg am Main | 771.98 mi (1,242.38 km) |
| Cristuru Secuiesc to Obernkirchen | 825.18 mi (1,328.01 km) |
| Cristuru Secuiesc to Oberschleissheim | 644.87 mi (1,037.81 km) |
| Cristuru Secuiesc to Oberstdorf | 700.47 mi (1,127.29 km) |
| Cristuru Secuiesc to Obertraubling | 626.15 mi (1,007.69 km) |
| Cristuru Secuiesc to Obertshausen | 788.80 mi (1,269.45 km) |
| Cristuru Secuiesc to Oberursel | 802.01 mi (1,290.71 km) |
| Cristuru Secuiesc to Ochsenfurt | 728.80 mi (1,172.88 km) |
| Cristuru Secuiesc to Ochsenhausen | 717.89 mi (1,155.34 km) |
| Cristuru Secuiesc to Ochtrup | 899.36 mi (1,447.38 km) |
| Cristuru Secuiesc to Odenthal | 878.11 mi (1,413.17 km) |
| Cristuru Secuiesc to Oelde | 852.22 mi (1,371.52 km) |
| Cristuru Secuiesc to Oelsnitz | 654.82 mi (1,053.83 km) |
| Cristuru Secuiesc to Oer-Erkenschwick | 884.36 mi (1,423.24 km) |
