| River Ridge to Opole | 5,359.88 mi (8,625.90 km) |
| River Ridge to Orzesze | 5,409.47 mi (8,705.69 km) |
| River Ridge to Osowa | 5,239.87 mi (8,432.75 km) |
| River Ridge to Ostroda | 5,318.07 mi (8,558.60 km) |
| River Ridge to Ostroleka | 5,397.20 mi (8,685.95 km) |
| River Ridge to Ostrow Mazowiecka | 5,419.12 mi (8,721.23 km) |
| River Ridge to Ostrow Wielkopolski | 5,319.22 mi (8,560.46 km) |
| River Ridge to Ostrowiec Swietokrzyski | 5,475.55 mi (8,812.04 km) |
| River Ridge to Ostrzeszow | 5,332.06 mi (8,581.13 km) |
| River Ridge to Oswiecim | 5,431.17 mi (8,740.62 km) |
| River Ridge to Otwock | 5,424.19 mi (8,729.38 km) |
| River Ridge to Ozarow Mazowiecki | 5,403.97 mi (8,696.85 km) |
| River Ridge to Ozimek | 5,369.96 mi (8,642.12 km) |
| River Ridge to Ozorkow | 5,360.05 mi (8,626.17 km) |
| River Ridge to Pabianice | 5,375.64 mi (8,651.26 km) |
