| Winnetka to Opole | 4,625.65 mi (7,444.27 km) |
| Winnetka to Orzesze | 4,676.10 mi (7,525.46 km) |
| Winnetka to Osowa | 4,481.21 mi (7,211.81 km) |
| Winnetka to Ostroda | 4,559.96 mi (7,338.55 km) |
| Winnetka to Ostroleka | 4,638.60 mi (7,465.11 km) |
| Winnetka to Ostrow Mazowiecka | 4,661.14 mi (7,501.39 km) |
| Winnetka to Ostrow Wielkopolski | 4,579.09 mi (7,369.34 km) |
| Winnetka to Ostrowiec Swietokrzyski | 4,729.61 mi (7,611.57 km) |
| Winnetka to Ostrzeszow | 4,593.08 mi (7,391.84 km) |
| Winnetka to Oswiecim | 4,697.09 mi (7,559.24 km) |
| Winnetka to Otwock | 4,671.76 mi (7,518.48 km) |
| Winnetka to Ozarow Mazowiecki | 4,652.24 mi (7,487.05 km) |
| Winnetka to Ozimek | 4,634.87 mi (7,459.11 km) |
| Winnetka to Ozorkow | 4,613.92 mi (7,425.39 km) |
| Winnetka to Pabianice | 4,631.15 mi (7,453.12 km) |
