| Oliveira de Frades to Opole | 1,425.01 mi (2,293.33 km) |
| Oliveira de Frades to Orzesze | 1,448.55 mi (2,331.22 km) |
| Oliveira de Frades to Osowa | 1,546.62 mi (2,489.04 km) |
| Oliveira de Frades to Ostroda | 1,580.46 mi (2,543.51 km) |
| Oliveira de Frades to Ostroleka | 1,625.95 mi (2,616.72 km) |
| Oliveira de Frades to Ostrow Mazowiecka | 1,633.03 mi (2,628.11 km) |
| Oliveira de Frades to Ostrow Wielkopolski | 1,443.48 mi (2,323.05 km) |
| Oliveira de Frades to Ostrowiec Swietokrzyski | 1,575.22 mi (2,535.07 km) |
| Oliveira de Frades to Ostrzeszow | 1,442.42 mi (2,321.36 km) |
| Oliveira de Frades to Oswiecim | 1,466.52 mi (2,360.14 km) |
| Oliveira de Frades to Otwock | 1,592.92 mi (2,563.56 km) |
| Oliveira de Frades to Ozarow Mazowiecki | 1,576.31 mi (2,536.83 km) |
| Oliveira de Frades to Ozimek | 1,436.77 mi (2,312.26 km) |
| Oliveira de Frades to Ozorkow | 1,509.84 mi (2,429.86 km) |
| Oliveira de Frades to Pabianice | 1,506.51 mi (2,424.50 km) |
