| Mealhada to Opole | 1,450.21 mi (2,333.89 km) |
| Mealhada to Orzesze | 1,473.43 mi (2,371.26 km) |
| Mealhada to Osowa | 1,573.01 mi (2,531.51 km) |
| Mealhada to Ostroda | 1,606.57 mi (2,585.52 km) |
| Mealhada to Ostroleka | 1,651.76 mi (2,658.25 km) |
| Mealhada to Ostrow Mazowiecka | 1,658.73 mi (2,669.47 km) |
| Mealhada to Ostrow Wielkopolski | 1,469.09 mi (2,364.27 km) |
| Mealhada to Ostrowiec Swietokrzyski | 1,600.24 mi (2,575.33 km) |
| Mealhada to Ostrzeszow | 1,467.94 mi (2,362.42 km) |
| Mealhada to Oswiecim | 1,491.31 mi (2,400.03 km) |
| Mealhada to Otwock | 1,618.42 mi (2,604.60 km) |
| Mealhada to Ozarow Mazowiecki | 1,601.88 mi (2,577.98 km) |
| Mealhada to Ozimek | 1,461.94 mi (2,352.77 km) |
| Mealhada to Ozorkow | 1,535.45 mi (2,471.06 km) |
| Mealhada to Pabianice | 1,531.99 mi (2,465.49 km) |
