| Canals to Opole | 1,209.56 mi (1,946.60 km) |
| Canals to Orzesze | 1,219.96 mi (1,963.34 km) |
| Canals to Osowa | 1,389.86 mi (2,236.76 km) |
| Canals to Ostroda | 1,403.63 mi (2,258.93 km) |
| Canals to Ostroleka | 1,431.16 mi (2,303.23 km) |
| Canals to Ostrow Mazowiecka | 1,432.59 mi (2,305.53 km) |
| Canals to Ostrow Wielkopolski | 1,245.55 mi (2,004.52 km) |
| Canals to Ostrowiec Swietokrzyski | 1,347.66 mi (2,168.84 km) |
| Canals to Ostrzeszow | 1,239.85 mi (1,995.35 km) |
| Canals to Oswiecim | 1,233.79 mi (1,985.59 km) |
| Canals to Otwock | 1,384.68 mi (2,228.43 km) |
| Canals to Ozarow Mazowiecki | 1,371.82 mi (2,207.74 km) |
| Canals to Ozimek | 1,219.90 mi (1,963.25 km) |
| Canals to Ozorkow | 1,308.96 mi (2,106.57 km) |
| Canals to Pabianice | 1,299.89 mi (2,091.98 km) |
