| Montemor-o-Velho to Opole | 1,469.14 mi (2,364.35 km) |
| Montemor-o-Velho to Orzesze | 1,492.22 mi (2,401.50 km) |
| Montemor-o-Velho to Osowa | 1,592.34 mi (2,562.63 km) |
| Montemor-o-Velho to Ostroda | 1,625.83 mi (2,616.52 km) |
| Montemor-o-Velho to Ostroleka | 1,670.93 mi (2,689.09 km) |
| Montemor-o-Velho to Ostrow Mazowiecka | 1,677.86 mi (2,700.25 km) |
| Montemor-o-Velho to Ostrow Wielkopolski | 1,488.18 mi (2,395.00 km) |
| Montemor-o-Velho to Ostrowiec Swietokrzyski | 1,619.08 mi (2,605.66 km) |
| Montemor-o-Velho to Ostrzeszow | 1,486.99 mi (2,393.08 km) |
| Montemor-o-Velho to Oswiecim | 1,510.05 mi (2,430.20 km) |
| Montemor-o-Velho to Otwock | 1,637.47 mi (2,635.26 km) |
| Montemor-o-Velho to Ozarow Mazowiecki | 1,620.96 mi (2,608.69 km) |
| Montemor-o-Velho to Ozimek | 1,480.86 mi (2,383.21 km) |
| Montemor-o-Velho to Ozorkow | 1,554.54 mi (2,501.79 km) |
| Montemor-o-Velho to Pabianice | 1,551.03 mi (2,496.14 km) |
