| River Falls to Opole | 4,641.71 mi (7,470.10 km) |
| River Falls to Orzesze | 4,692.38 mi (7,551.65 km) |
| River Falls to Osowa | 4,479.20 mi (7,208.57 km) |
| River Falls to Ostroda | 4,557.77 mi (7,335.02 km) |
| River Falls to Ostroleka | 4,635.38 mi (7,459.92 km) |
| River Falls to Ostrow Mazowiecka | 4,658.26 mi (7,496.74 km) |
| River Falls to Ostrow Wielkopolski | 4,591.09 mi (7,388.64 km) |
| River Falls to Ostrowiec Swietokrzyski | 4,735.87 mi (7,621.65 km) |
| River Falls to Ostrzeszow | 4,605.82 mi (7,412.35 km) |
| River Falls to Oswiecim | 4,712.66 mi (7,584.30 km) |
| River Falls to Otwock | 4,673.34 mi (7,521.01 km) |
| River Falls to Ozarow Mazowiecki | 4,654.52 mi (7,490.73 km) |
| River Falls to Ozimek | 4,650.21 mi (7,483.79 km) |
| River Falls to Ozorkow | 4,620.98 mi (7,436.75 km) |
| River Falls to Pabianice | 4,639.35 mi (7,466.31 km) |
