| Westminster to Opole | 784.37 mi (1,262.31 km) |
| Westminster to Orzesze | 827.19 mi (1,331.23 km) |
| Westminster to Osowa | 797.82 mi (1,283.97 km) |
| Westminster to Ostroda | 854.28 mi (1,374.83 km) |
| Westminster to Ostroleka | 920.18 mi (1,480.88 km) |
| Westminster to Ostrow Mazowiecka | 934.89 mi (1,504.55 km) |
| Westminster to Ostrow Wielkopolski | 769.04 mi (1,237.65 km) |
| Westminster to Ostrowiec Swietokrzyski | 929.51 mi (1,495.90 km) |
| Westminster to Ostrzeszow | 775.95 mi (1,248.78 km) |
| Westminster to Oswiecim | 849.33 mi (1,366.87 km) |
| Westminster to Otwock | 912.04 mi (1,467.78 km) |
| Westminster to Ozarow Mazowiecki | 891.69 mi (1,435.04 km) |
| Westminster to Ozimek | 796.30 mi (1,281.52 km) |
| Westminster to Ozorkow | 829.16 mi (1,334.40 km) |
| Westminster to Pabianice | 835.76 mi (1,345.03 km) |
