| Baia Mare to Oberkirch | 716.48 mi (1,153.06 km) |
| Baia Mare to Obernburg am Main | 673.65 mi (1,084.13 km) |
| Baia Mare to Obernkirchen | 715.44 mi (1,151.40 km) |
| Baia Mare to Oberschleissheim | 556.89 mi (896.23 km) |
| Baia Mare to Oberstdorf | 620.06 mi (997.89 km) |
| Baia Mare to Obertraubling | 531.66 mi (855.62 km) |
| Baia Mare to Obertshausen | 689.34 mi (1,109.39 km) |
| Baia Mare to Oberursel | 701.96 mi (1,129.70 km) |
| Baia Mare to Ochsenfurt | 630.99 mi (1,015.48 km) |
| Baia Mare to Ochsenhausen | 631.78 mi (1,016.74 km) |
| Baia Mare to Ochtrup | 791.35 mi (1,273.55 km) |
| Baia Mare to Odenthal | 774.88 mi (1,247.05 km) |
| Baia Mare to Oelde | 744.86 mi (1,198.74 km) |
| Baia Mare to Oelsnitz | 550.19 mi (885.44 km) |
| Baia Mare to Oer-Erkenschwick | 778.44 mi (1,252.78 km) |
