| Winnetka to Opwijk | 4,122.06 mi (6,633.81 km) |
| Winnetka to Ostend | 4,065.69 mi (6,543.09 km) |
| Winnetka to Oud-Heverlee | 4,144.87 mi (6,670.52 km) |
| Winnetka to Oud-Turnhout | 4,139.38 mi (6,661.69 km) |
| Winnetka to Oudenaarde | 4,104.30 mi (6,605.24 km) |
| Winnetka to Oudenburg | 4,070.18 mi (6,550.31 km) |
| Winnetka to Oupeye | 4,185.77 mi (6,736.35 km) |
| Winnetka to Overijse | 4,141.66 mi (6,665.36 km) |
| Winnetka to Overpelt | 4,158.98 mi (6,693.24 km) |
| Winnetka to Paal | 4,156.33 mi (6,688.97 km) |
| Winnetka to Peer | 4,163.37 mi (6,700.30 km) |
| Winnetka to Pepinster | 4,197.39 mi (6,755.05 km) |
| Winnetka to Peruwelz | 4,115.39 mi (6,623.08 km) |
| Winnetka to Perwez | 4,157.90 mi (6,691.50 km) |
| Winnetka to Philippeville | 4,163.18 mi (6,699.99 km) |
