| Hopatcong to Opwijk | 3,665.09 mi (5,898.40 km) |
| Hopatcong to Ostend | 3,607.51 mi (5,805.72 km) |
| Hopatcong to Oud-Heverlee | 3,688.08 mi (5,935.39 km) |
| Hopatcong to Oud-Turnhout | 3,688.12 mi (5,935.45 km) |
| Hopatcong to Oudenaarde | 3,644.51 mi (5,865.27 km) |
| Hopatcong to Oudenburg | 3,611.82 mi (5,812.66 km) |
| Hopatcong to Oupeye | 3,730.77 mi (6,004.09 km) |
| Hopatcong to Overijse | 3,684.01 mi (5,928.83 km) |
| Hopatcong to Overpelt | 3,708.07 mi (5,967.57 km) |
| Hopatcong to Paal | 3,703.01 mi (5,959.42 km) |
| Hopatcong to Peer | 3,711.78 mi (5,973.53 km) |
| Hopatcong to Pepinster | 3,741.61 mi (6,021.54 km) |
| Hopatcong to Peruwelz | 3,652.40 mi (5,877.97 km) |
| Hopatcong to Perwez | 3,699.60 mi (5,953.93 km) |
| Hopatcong to Philippeville | 3,700.13 mi (5,954.78 km) |
