| Alenquer to Opole | 1,531.87 mi (2,465.31 km) |
| Alenquer to Orzesze | 1,553.44 mi (2,500.02 km) |
| Alenquer to Osowa | 1,661.59 mi (2,674.07 km) |
| Alenquer to Ostroda | 1,693.28 mi (2,725.08 km) |
| Alenquer to Ostroleka | 1,736.66 mi (2,794.88 km) |
| Alenquer to Ostrow Mazowiecka | 1,742.99 mi (2,805.07 km) |
| Alenquer to Ostrow Wielkopolski | 1,552.99 mi (2,499.29 km) |
| Alenquer to Ostrowiec Swietokrzyski | 1,680.86 mi (2,705.08 km) |
| Alenquer to Ostrzeszow | 1,551.28 mi (2,496.54 km) |
| Alenquer to Oswiecim | 1,570.81 mi (2,527.97 km) |
| Alenquer to Otwock | 1,701.61 mi (2,738.48 km) |
| Alenquer to Ozarow Mazowiecki | 1,685.48 mi (2,712.52 km) |
| Alenquer to Ozimek | 1,543.47 mi (2,483.97 km) |
| Alenquer to Ozorkow | 1,619.25 mi (2,605.93 km) |
| Alenquer to Pabianice | 1,615.08 mi (2,599.22 km) |
