| Helsinki to Orzesze | 733.41 mi (1,180.31 km) |
| Helsinki to Osowa | 464.01 mi (746.75 km) |
| Helsinki to Ostroda | 484.44 mi (779.63 km) |
| Helsinki to Ostroleka | 507.13 mi (816.15 km) |
| Helsinki to Ostrow Mazowiecka | 522.15 mi (840.32 km) |
| Helsinki to Ostrow Wielkopolski | 649.29 mi (1,044.93 km) |
| Helsinki to Ostrowiec Swietokrzyski | 652.81 mi (1,050.60 km) |
| Helsinki to Ostrzeszow | 662.36 mi (1,065.96 km) |
| Helsinki to Oswiecim | 734.99 mi (1,182.85 km) |
| Helsinki to Otwock | 573.92 mi (923.63 km) |
| Helsinki to Ozarow Mazowiecki | 571.85 mi (920.30 km) |
| Helsinki to Ozimek | 706.36 mi (1,136.77 km) |
| Helsinki to Ozorkow | 606.81 mi (976.57 km) |
| Helsinki to Pabianice | 626.26 mi (1,007.86 km) |
| Helsinki to Parczew | 595.24 mi (957.94 km) |
