| Marinha Grande to Opole | 1,497.50 mi (2,409.99 km) |
| Marinha Grande to Orzesze | 1,520.13 mi (2,446.42 km) |
| Marinha Grande to Osowa | 1,622.52 mi (2,611.20 km) |
| Marinha Grande to Ostroda | 1,655.54 mi (2,664.34 km) |
| Marinha Grande to Ostroleka | 1,700.17 mi (2,736.15 km) |
| Marinha Grande to Ostrow Mazowiecka | 1,706.93 mi (2,747.04 km) |
| Marinha Grande to Ostrow Wielkopolski | 1,517.15 mi (2,441.61 km) |
| Marinha Grande to Ostrowiec Swietokrzyski | 1,647.17 mi (2,650.87 km) |
| Marinha Grande to Ostrzeszow | 1,515.81 mi (2,439.46 km) |
| Marinha Grande to Oswiecim | 1,537.82 mi (2,474.89 km) |
| Marinha Grande to Otwock | 1,666.26 mi (2,681.59 km) |
| Marinha Grande to Ozarow Mazowiecki | 1,649.86 mi (2,655.19 km) |
| Marinha Grande to Ozimek | 1,509.18 mi (2,428.80 km) |
| Marinha Grande to Ozorkow | 1,583.48 mi (2,548.37 km) |
| Marinha Grande to Pabianice | 1,579.78 mi (2,542.41 km) |
