| Green Bay to Oberkirch | 4,257.14 mi (6,851.20 km) |
| Green Bay to Obernburg am Main | 4,242.20 mi (6,827.16 km) |
| Green Bay to Obernkirchen | 4,143.42 mi (6,668.19 km) |
| Green Bay to Oberschleissheim | 4,396.13 mi (7,074.89 km) |
| Green Bay to Oberstdorf | 4,384.97 mi (7,056.93 km) |
| Green Bay to Obertraubling | 4,386.98 mi (7,060.16 km) |
| Green Bay to Obertshausen | 4,221.90 mi (6,794.49 km) |
| Green Bay to Oberursel | 4,207.16 mi (6,770.78 km) |
| Green Bay to Ochsenfurt | 4,283.19 mi (6,893.13 km) |
| Green Bay to Ochsenhausen | 4,344.80 mi (6,992.28 km) |
| Green Bay to Ochtrup | 4,078.70 mi (6,564.04 km) |
| Green Bay to Odenthal | 4,121.80 mi (6,633.39 km) |
| Green Bay to Oelde | 4,126.90 mi (6,641.61 km) |
| Green Bay to Oelsnitz | 4,325.18 mi (6,960.71 km) |
| Green Bay to Oer-Erkenschwick | 4,102.74 mi (6,602.71 km) |
