| Warren to Opole | 4,442.84 mi (7,150.07 km) |
| Warren to Orzesze | 4,493.04 mi (7,230.84 km) |
| Warren to Osowa | 4,308.55 mi (6,933.94 km) |
| Warren to Ostroda | 4,387.15 mi (7,060.44 km) |
| Warren to Ostroleka | 4,466.13 mi (7,187.54 km) |
| Warren to Ostrow Mazowiecka | 4,488.41 mi (7,223.40 km) |
| Warren to Ostrow Wielkopolski | 4,398.55 mi (7,078.78 km) |
| Warren to Ostrowiec Swietokrzyski | 4,551.68 mi (7,325.22 km) |
| Warren to Ostrzeszow | 4,412.09 mi (7,100.58 km) |
| Warren to Oswiecim | 4,514.33 mi (7,265.12 km) |
| Warren to Otwock | 4,496.54 mi (7,236.48 km) |
| Warren to Ozarow Mazowiecki | 4,476.68 mi (7,204.53 km) |
| Warren to Ozimek | 4,452.41 mi (7,165.47 km) |
| Warren to Ozorkow | 4,435.91 mi (7,138.90 km) |
| Warren to Pabianice | 4,452.47 mi (7,165.56 km) |
