| Allen Park to Oberkirch | 4,178.18 mi (6,724.12 km) |
| Allen Park to Obernburg am Main | 4,171.34 mi (6,713.12 km) |
| Allen Park to Obernkirchen | 4,083.85 mi (6,572.33 km) |
| Allen Park to Oberschleissheim | 4,323.14 mi (6,957.42 km) |
| Allen Park to Oberstdorf | 4,305.57 mi (6,929.15 km) |
| Allen Park to Obertraubling | 4,318.40 mi (6,949.79 km) |
| Allen Park to Obertshausen | 4,151.47 mi (6,681.14 km) |
| Allen Park to Oberursel | 4,136.86 mi (6,657.63 km) |
| Allen Park to Ochsenfurt | 4,213.32 mi (6,780.69 km) |
| Allen Park to Ochsenhausen | 4,267.62 mi (6,868.07 km) |
| Allen Park to Ochtrup | 4,015.26 mi (6,461.94 km) |
| Allen Park to Odenthal | 4,052.58 mi (6,522.00 km) |
| Allen Park to Oelde | 4,063.45 mi (6,539.49 km) |
| Allen Park to Oelsnitz | 4,263.04 mi (6,860.71 km) |
| Allen Park to Oer-Erkenschwick | 4,036.69 mi (6,496.42 km) |
