| Lake Hopatcong to Opwijk | 3,662.83 mi (5,894.75 km) |
| Lake Hopatcong to Ostend | 3,605.24 mi (5,802.07 km) |
| Lake Hopatcong to Oud-Heverlee | 3,685.81 mi (5,931.74 km) |
| Lake Hopatcong to Oud-Turnhout | 3,685.87 mi (5,931.83 km) |
| Lake Hopatcong to Oudenaarde | 3,642.23 mi (5,861.61 km) |
| Lake Hopatcong to Oudenburg | 3,609.55 mi (5,809.01 km) |
| Lake Hopatcong to Oupeye | 3,728.51 mi (6,000.45 km) |
| Lake Hopatcong to Overijse | 3,681.74 mi (5,925.18 km) |
| Lake Hopatcong to Overpelt | 3,705.82 mi (5,963.94 km) |
| Lake Hopatcong to Paal | 3,700.75 mi (5,955.78 km) |
| Lake Hopatcong to Peer | 3,709.52 mi (5,969.90 km) |
| Lake Hopatcong to Pepinster | 3,739.34 mi (6,017.89 km) |
| Lake Hopatcong to Peruwelz | 3,650.11 mi (5,874.29 km) |
| Lake Hopatcong to Perwez | 3,697.33 mi (5,950.27 km) |
| Lake Hopatcong to Philippeville | 3,697.84 mi (5,951.10 km) |
