| Montclair to Opwijk | 5,583.67 mi (8,986.05 km) |
| Montclair to Ostend | 5,531.83 mi (8,902.62 km) |
| Montclair to Oud-Heverlee | 5,605.12 mi (9,020.57 km) |
| Montclair to Oud-Turnhout | 5,591.22 mi (8,998.20 km) |
| Montclair to Oudenaarde | 5,571.14 mi (8,965.88 km) |
| Montclair to Oudenburg | 5,536.38 mi (8,909.94 km) |
| Montclair to Oupeye | 5,641.28 mi (9,078.77 km) |
| Montclair to Overijse | 5,603.43 mi (9,017.85 km) |
| Montclair to Overpelt | 5,609.32 mi (9,027.33 km) |
| Montclair to Paal | 5,610.60 mi (9,029.39 km) |
| Montclair to Peer | 5,614.57 mi (9,035.78 km) |
| Montclair to Pepinster | 5,653.60 mi (9,098.58 km) |
| Montclair to Peruwelz | 5,586.66 mi (8,990.86 km) |
| Montclair to Perwez | 5,619.92 mi (9,044.39 km) |
| Montclair to Philippeville | 5,632.38 mi (9,064.44 km) |
