| Westlake to Opole | 4,455.84 mi (7,170.99 km) |
| Westlake to Orzesze | 4,505.84 mi (7,251.46 km) |
| Westlake to Osowa | 4,327.28 mi (6,964.08 km) |
| Westlake to Ostroda | 4,405.73 mi (7,090.33 km) |
| Westlake to Ostroleka | 4,484.80 mi (7,217.59 km) |
| Westlake to Ostrow Mazowiecka | 4,506.93 mi (7,253.20 km) |
| Westlake to Ostrow Wielkopolski | 4,412.87 mi (7,101.83 km) |
| Westlake to Ostrowiec Swietokrzyski | 4,567.33 mi (7,350.40 km) |
| Westlake to Ostrzeszow | 4,426.16 mi (7,123.22 km) |
| Westlake to Oswiecim | 4,527.30 mi (7,285.98 km) |
| Westlake to Otwock | 4,513.72 mi (7,264.13 km) |
| Westlake to Ozarow Mazowiecki | 4,493.70 mi (7,231.91 km) |
| Westlake to Ozimek | 4,465.60 mi (7,186.70 km) |
| Westlake to Ozorkow | 4,451.61 mi (7,164.18 km) |
| Westlake to Pabianice | 4,467.80 mi (7,190.22 km) |
