| Olean to Opole | 4,298.35 mi (6,917.53 km) |
| Olean to Orzesze | 4,348.10 mi (6,997.60 km) |
| Olean to Osowa | 4,176.49 mi (6,721.41 km) |
| Olean to Ostroda | 4,254.68 mi (6,847.25 km) |
| Olean to Ostroleka | 4,333.81 mi (6,974.60 km) |
| Olean to Ostrow Mazowiecka | 4,355.73 mi (7,009.88 km) |
| Olean to Ostrow Wielkopolski | 4,256.88 mi (6,850.78 km) |
| Olean to Ostrowiec Swietokrzyski | 4,412.71 mi (7,101.57 km) |
| Olean to Ostrzeszow | 4,269.86 mi (6,871.68 km) |
| Olean to Oswiecim | 4,369.72 mi (7,032.38 km) |
| Olean to Otwock | 4,360.92 mi (7,018.22 km) |
| Olean to Ozarow Mazowiecki | 4,340.73 mi (6,985.73 km) |
| Olean to Ozimek | 4,308.31 mi (6,933.56 km) |
| Olean to Ozorkow | 4,297.15 mi (6,915.59 km) |
| Olean to Pabianice | 4,312.88 mi (6,940.92 km) |
