| Irondale to Oberkirch | 4,724.71 mi (7,603.68 km) |
| Irondale to Obernburg am Main | 4,726.66 mi (7,606.82 km) |
| Irondale to Obernkirchen | 4,651.04 mi (7,485.13 km) |
| Irondale to Oberschleissheim | 4,875.16 mi (7,845.81 km) |
| Irondale to Oberstdorf | 4,850.67 mi (7,806.41 km) |
| Irondale to Obertraubling | 4,875.10 mi (7,845.72 km) |
| Irondale to Obertshausen | 4,707.38 mi (7,575.79 km) |
| Irondale to Oberursel | 4,693.00 mi (7,552.66 km) |
| Irondale to Ochsenfurt | 4,769.40 mi (7,675.60 km) |
| Irondale to Ochsenhausen | 4,815.47 mi (7,749.75 km) |
| Irondale to Ochtrup | 4,579.15 mi (7,369.42 km) |
| Irondale to Odenthal | 4,610.42 mi (7,419.76 km) |
| Irondale to Oelde | 4,627.01 mi (7,446.46 km) |
| Irondale to Oelsnitz | 4,826.62 mi (7,767.70 km) |
| Irondale to Oer-Erkenschwick | 4,597.85 mi (7,399.52 km) |
