| Caldas da Rainha to Opole | 1,520.87 mi (2,447.60 km) |
| Caldas da Rainha to Orzesze | 1,543.14 mi (2,483.44 km) |
| Caldas da Rainha to Osowa | 1,647.34 mi (2,651.13 km) |
| Caldas da Rainha to Ostroda | 1,679.98 mi (2,703.67 km) |
| Caldas da Rainha to Ostroleka | 1,724.23 mi (2,774.88 km) |
| Caldas da Rainha to Ostrow Mazowiecka | 1,730.86 mi (2,785.55 km) |
| Caldas da Rainha to Ostrow Wielkopolski | 1,541.00 mi (2,480.00 km) |
| Caldas da Rainha to Ostrowiec Swietokrzyski | 1,670.32 mi (2,688.12 km) |
| Caldas da Rainha to Ostrzeszow | 1,539.54 mi (2,477.65 km) |
| Caldas da Rainha to Oswiecim | 1,560.72 mi (2,511.74 km) |
| Caldas da Rainha to Otwock | 1,689.96 mi (2,719.73 km) |
| Caldas da Rainha to Ozarow Mazowiecki | 1,673.64 mi (2,693.47 km) |
| Caldas da Rainha to Ozimek | 1,532.52 mi (2,466.36 km) |
| Caldas da Rainha to Ozorkow | 1,607.31 mi (2,586.72 km) |
| Caldas da Rainha to Pabianice | 1,603.46 mi (2,580.52 km) |
