| Glassboro to Opwijk | 3,738.77 mi (6,016.97 km) |
| Glassboro to Ostend | 3,681.14 mi (5,924.22 km) |
| Glassboro to Oud-Heverlee | 3,761.74 mi (6,053.94 km) |
| Glassboro to Oud-Turnhout | 3,762.36 mi (6,054.93 km) |
| Glassboro to Oudenaarde | 3,717.92 mi (5,983.41 km) |
| Glassboro to Oudenburg | 3,685.42 mi (5,931.12 km) |
| Glassboro to Oupeye | 3,804.57 mi (6,122.86 km) |
| Glassboro to Overijse | 3,757.58 mi (6,047.25 km) |
| Glassboro to Overpelt | 3,782.32 mi (6,087.06 km) |
| Glassboro to Paal | 3,777.02 mi (6,078.52 km) |
| Glassboro to Peer | 3,785.95 mi (6,092.90 km) |
| Glassboro to Pepinster | 3,815.31 mi (6,140.15 km) |
| Glassboro to Peruwelz | 3,725.45 mi (5,995.53 km) |
| Glassboro to Perwez | 3,773.09 mi (6,072.20 km) |
| Glassboro to Philippeville | 3,773.11 mi (6,072.23 km) |
