| Willmar to Opwijk | 4,240.59 mi (6,824.57 km) |
| Willmar to Ostend | 4,186.05 mi (6,736.79 km) |
| Willmar to Oud-Heverlee | 4,262.90 mi (6,860.47 km) |
| Willmar to Oud-Turnhout | 4,253.28 mi (6,845.00 km) |
| Willmar to Oudenaarde | 4,225.28 mi (6,799.94 km) |
| Willmar to Oudenburg | 4,190.60 mi (6,744.12 km) |
| Willmar to Oupeye | 4,301.79 mi (6,923.07 km) |
| Willmar to Overijse | 4,260.41 mi (6,856.48 km) |
| Willmar to Overpelt | 4,272.31 mi (6,875.61 km) |
| Willmar to Paal | 4,271.54 mi (6,874.38 km) |
| Willmar to Peer | 4,277.14 mi (6,883.40 km) |
| Willmar to Pepinster | 4,313.84 mi (6,942.45 km) |
| Willmar to Peruwelz | 4,238.65 mi (6,821.45 km) |
| Willmar to Perwez | 4,276.90 mi (6,883.00 km) |
| Willmar to Philippeville | 4,285.75 mi (6,897.25 km) |
