| Meridian to Opole | 5,369.38 mi (8,641.19 km) |
| Meridian to Orzesze | 5,418.66 mi (8,720.48 km) |
| Meridian to Osowa | 5,161.19 mi (8,306.13 km) |
| Meridian to Ostroda | 5,235.75 mi (8,426.13 km) |
| Meridian to Ostroleka | 5,306.89 mi (8,540.61 km) |
| Meridian to Ostrow Mazowiecka | 5,329.77 mi (8,577.44 km) |
| Meridian to Ostrow Wielkopolski | 5,309.18 mi (8,544.29 km) |
| Meridian to Ostrowiec Swietokrzyski | 5,431.27 mi (8,740.79 km) |
| Meridian to Ostrzeszow | 5,325.46 mi (8,570.50 km) |
| Meridian to Oswiecim | 5,436.11 mi (8,748.57 km) |
| Meridian to Otwock | 5,357.50 mi (8,622.07 km) |
| Meridian to Ozarow Mazowiecki | 5,341.60 mi (8,596.48 km) |
| Meridian to Ozimek | 5,375.49 mi (8,651.01 km) |
| Meridian to Ozorkow | 5,323.50 mi (8,567.34 km) |
| Meridian to Pabianice | 5,344.42 mi (8,601.02 km) |
