| Lake Norman of Catawba to Opole | 4,716.45 mi (7,590.39 km) |
| Lake Norman of Catawba to Orzesze | 4,765.55 mi (7,669.41 km) |
| Lake Norman of Catawba to Osowa | 4,607.52 mi (7,415.09 km) |
| Lake Norman of Catawba to Ostroda | 4,685.13 mi (7,539.98 km) |
| Lake Norman of Catawba to Ostroleka | 4,764.18 mi (7,667.21 km) |
| Lake Norman of Catawba to Ostrow Mazowiecka | 4,785.71 mi (7,701.85 km) |
| Lake Norman of Catawba to Ostrow Wielkopolski | 4,678.17 mi (7,528.79 km) |
| Lake Norman of Catawba to Ostrowiec Swietokrzyski | 4,836.35 mi (7,783.35 km) |
| Lake Norman of Catawba to Ostrzeszow | 4,690.53 mi (7,548.67 km) |
| Lake Norman of Catawba to Oswiecim | 4,787.44 mi (7,704.64 km) |
| Lake Norman of Catawba to Otwock | 4,788.07 mi (7,705.65 km) |
| Lake Norman of Catawba to Ozarow Mazowiecki | 4,767.61 mi (7,672.72 km) |
| Lake Norman of Catawba to Ozimek | 4,726.81 mi (7,607.06 km) |
| Lake Norman of Catawba to Ozorkow | 4,721.35 mi (7,598.28 km) |
| Lake Norman of Catawba to Pabianice | 4,736.19 mi (7,622.16 km) |
