| West Allis to Opole | 4,588.86 mi (7,385.05 km) |
| West Allis to Orzesze | 4,639.37 mi (7,466.34 km) |
| West Allis to Osowa | 4,441.35 mi (7,147.66 km) |
| West Allis to Ostroda | 4,520.11 mi (7,274.41 km) |
| West Allis to Ostroleka | 4,598.63 mi (7,400.77 km) |
| West Allis to Ostrow Mazowiecka | 4,621.23 mi (7,437.15 km) |
| West Allis to Ostrow Wielkopolski | 4,541.59 mi (7,308.98 km) |
| West Allis to Ostrowiec Swietokrzyski | 4,691.23 mi (7,549.80 km) |
| West Allis to Ostrzeszow | 4,555.70 mi (7,331.70 km) |
| West Allis to Oswiecim | 4,660.25 mi (7,499.95 km) |
| West Allis to Otwock | 4,632.58 mi (7,455.42 km) |
| West Allis to Ozarow Mazowiecki | 4,613.16 mi (7,424.16 km) |
| West Allis to Ozimek | 4,597.96 mi (7,399.70 km) |
| West Allis to Ozorkow | 4,575.61 mi (7,363.74 km) |
| West Allis to Pabianice | 4,593.04 mi (7,391.78 km) |
