| Barcelos to Opole | 1,410.12 mi (2,269.37 km) |
| Barcelos to Orzesze | 1,435.51 mi (2,310.22 km) |
| Barcelos to Osowa | 1,522.61 mi (2,450.40 km) |
| Barcelos to Ostroda | 1,559.02 mi (2,509.00 km) |
| Barcelos to Ostroleka | 1,606.83 mi (2,585.94 km) |
| Barcelos to Ostrow Mazowiecka | 1,614.69 mi (2,598.60 km) |
| Barcelos to Ostrow Wielkopolski | 1,425.87 mi (2,294.72 km) |
| Barcelos to Ostrowiec Swietokrzyski | 1,561.25 mi (2,512.60 km) |
| Barcelos to Ostrzeszow | 1,425.51 mi (2,294.13 km) |
| Barcelos to Oswiecim | 1,454.00 mi (2,339.99 km) |
| Barcelos to Otwock | 1,575.94 mi (2,536.23 km) |
| Barcelos to Ozarow Mazowiecki | 1,558.87 mi (2,508.75 km) |
| Barcelos to Ozimek | 1,422.01 mi (2,288.51 km) |
| Barcelos to Ozorkow | 1,492.25 mi (2,401.55 km) |
| Barcelos to Pabianice | 1,489.78 mi (2,397.58 km) |
