| Box Elder to Opwijk | 4,561.23 mi (7,340.59 km) |
| Box Elder to Ostend | 4,508.08 mi (7,255.05 km) |
| Box Elder to Oud-Heverlee | 4,583.11 mi (7,375.80 km) |
| Box Elder to Oud-Turnhout | 4,571.14 mi (7,356.55 km) |
| Box Elder to Oudenaarde | 4,547.43 mi (7,318.38 km) |
| Box Elder to Oudenburg | 4,512.64 mi (7,262.39 km) |
| Box Elder to Oupeye | 4,620.59 mi (7,436.12 km) |
| Box Elder to Overijse | 4,581.06 mi (7,372.50 km) |
| Box Elder to Overpelt | 4,589.71 mi (7,386.42 km) |
| Box Elder to Paal | 4,590.05 mi (7,386.97 km) |
| Box Elder to Peer | 4,594.78 mi (7,394.58 km) |
| Box Elder to Pepinster | 4,632.81 mi (7,455.78 km) |
| Box Elder to Peruwelz | 4,562.02 mi (7,341.87 km) |
| Box Elder to Perwez | 4,597.58 mi (7,399.09 km) |
| Box Elder to Philippeville | 4,608.44 mi (7,416.56 km) |
