| Portales to Opole | 5,573.70 mi (8,970.00 km) |
| Portales to Orzesze | 5,624.37 mi (9,051.55 km) |
| Portales to Osowa | 5,408.79 mi (8,704.61 km) |
| Portales to Ostroda | 5,487.25 mi (8,830.87 km) |
| Portales to Ostroleka | 5,564.55 mi (8,955.27 km) |
| Portales to Ostrow Mazowiecka | 5,587.47 mi (8,992.17 km) |
| Portales to Ostrow Wielkopolski | 5,522.78 mi (8,888.06 km) |
| Portales to Ostrowiec Swietokrzyski | 5,666.79 mi (9,119.81 km) |
| Portales to Ostrzeszow | 5,537.58 mi (8,911.87 km) |
| Portales to Oswiecim | 5,644.61 mi (9,084.12 km) |
| Portales to Otwock | 5,603.49 mi (9,017.94 km) |
| Portales to Ozarow Mazowiecki | 5,584.82 mi (8,987.90 km) |
| Portales to Ozimek | 5,582.16 mi (8,983.61 km) |
| Portales to Ozorkow | 5,552.08 mi (8,935.21 km) |
| Portales to Pabianice | 5,570.59 mi (8,965.00 km) |
