| Ovar to Opole | 1,437.44 mi (2,313.34 km) |
| Ovar to Orzesze | 1,461.69 mi (2,352.37 km) |
| Ovar to Osowa | 1,555.32 mi (2,503.04 km) |
| Ovar to Ostroda | 1,590.28 mi (2,559.30 km) |
| Ovar to Ostroleka | 1,636.74 mi (2,634.08 km) |
| Ovar to Ostrow Mazowiecka | 1,644.14 mi (2,645.99 km) |
| Ovar to Ostrow Wielkopolski | 1,454.84 mi (2,341.34 km) |
| Ovar to Ostrowiec Swietokrzyski | 1,588.03 mi (2,555.69 km) |
| Ovar to Ostrzeszow | 1,454.07 mi (2,340.09 km) |
| Ovar to Oswiecim | 1,479.86 mi (2,381.61 km) |
| Ovar to Otwock | 1,604.56 mi (2,582.29 km) |
| Ovar to Ozarow Mazowiecki | 1,587.77 mi (2,555.26 km) |
| Ovar to Ozimek | 1,449.26 mi (2,332.35 km) |
| Ovar to Ozorkow | 1,521.23 mi (2,448.18 km) |
| Ovar to Pabianice | 1,518.24 mi (2,443.37 km) |
