| Iernut to Oberkirch | 766.00 mi (1,232.76 km) |
| Iernut to Obernburg am Main | 732.52 mi (1,178.88 km) |
| Iernut to Obernkirchen | 787.67 mi (1,267.64 km) |
| Iernut to Oberschleissheim | 605.03 mi (973.70 km) |
| Iernut to Oberstdorf | 660.79 mi (1,063.43 km) |
| Iernut to Obertraubling | 586.49 mi (943.86 km) |
| Iernut to Obertshausen | 749.43 mi (1,206.09 km) |
| Iernut to Oberursel | 762.70 mi (1,227.44 km) |
| Iernut to Ochsenfurt | 689.31 mi (1,109.34 km) |
| Iernut to Ochsenhausen | 678.07 mi (1,091.25 km) |
| Iernut to Ochtrup | 861.32 mi (1,386.17 km) |
| Iernut to Odenthal | 839.15 mi (1,350.49 km) |
| Iernut to Oelde | 814.05 mi (1,310.08 km) |
| Iernut to Oelsnitz | 616.22 mi (991.71 km) |
| Iernut to Oer-Erkenschwick | 845.87 mi (1,361.29 km) |
