| Croydon to Opole | 783.75 mi (1,261.32 km) |
| Croydon to Orzesze | 826.28 mi (1,329.77 km) |
| Croydon to Osowa | 800.00 mi (1,287.48 km) |
| Croydon to Ostroda | 855.91 mi (1,377.45 km) |
| Croydon to Ostroleka | 921.38 mi (1,482.82 km) |
| Croydon to Ostrow Mazowiecka | 935.93 mi (1,506.23 km) |
| Croydon to Ostrow Wielkopolski | 769.15 mi (1,237.83 km) |
| Croydon to Ostrowiec Swietokrzyski | 929.35 mi (1,495.64 km) |
| Croydon to Ostrzeszow | 775.90 mi (1,248.68 km) |
| Croydon to Oswiecim | 848.40 mi (1,365.36 km) |
| Croydon to Otwock | 912.62 mi (1,468.73 km) |
| Croydon to Ozarow Mazowiecki | 892.33 mi (1,436.06 km) |
| Croydon to Ozimek | 795.71 mi (1,280.57 km) |
| Croydon to Ozorkow | 829.57 mi (1,335.06 km) |
| Croydon to Pabianice | 835.95 mi (1,345.34 km) |
