| Green Bay to Opwijk | 4,018.37 mi (6,466.94 km) |
| Green Bay to Ostend | 3,962.51 mi (6,377.05 km) |
| Green Bay to Oud-Heverlee | 4,041.05 mi (6,503.44 km) |
| Green Bay to Oud-Turnhout | 4,034.20 mi (6,492.42 km) |
| Green Bay to Oudenaarde | 4,001.40 mi (6,439.63 km) |
| Green Bay to Oudenburg | 3,967.03 mi (6,384.32 km) |
| Green Bay to Oupeye | 4,081.35 mi (6,568.30 km) |
| Green Bay to Overijse | 4,038.08 mi (6,498.65 km) |
| Green Bay to Overpelt | 4,053.64 mi (6,523.71 km) |
| Green Bay to Paal | 4,051.60 mi (6,520.43 km) |
| Green Bay to Peer | 4,058.18 mi (6,531.01 km) |
| Green Bay to Pepinster | 4,093.13 mi (6,587.26 km) |
| Green Bay to Peruwelz | 4,013.26 mi (6,458.72 km) |
| Green Bay to Perwez | 4,054.42 mi (6,524.96 km) |
| Green Bay to Philippeville | 4,060.89 mi (6,535.38 km) |
