| Olhao to Opole | 1,579.53 mi (2,542.01 km) |
| Olhao to Orzesze | 1,596.59 mi (2,569.46 km) |
| Olhao to Osowa | 1,729.13 mi (2,782.76 km) |
| Olhao to Ostroda | 1,754.64 mi (2,823.81 km) |
| Olhao to Ostroleka | 1,792.28 mi (2,884.40 km) |
| Olhao to Ostrow Mazowiecka | 1,796.73 mi (2,891.56 km) |
| Olhao to Ostrow Wielkopolski | 1,606.70 mi (2,585.74 km) |
| Olhao to Ostrowiec Swietokrzyski | 1,724.86 mi (2,775.90 km) |
| Olhao to Ostrzeszow | 1,603.43 mi (2,580.47 km) |
| Olhao to Oswiecim | 1,612.54 mi (2,595.13 km) |
| Olhao to Otwock | 1,752.51 mi (2,820.40 km) |
| Olhao to Ozarow Mazowiecki | 1,737.60 mi (2,796.40 km) |
| Olhao to Ozimek | 1,590.70 mi (2,559.98 km) |
| Olhao to Ozorkow | 1,672.30 mi (2,691.30 km) |
| Olhao to Pabianice | 1,666.17 mi (2,681.43 km) |
