| Erie to Opole | 4,356.23 mi (7,010.68 km) |
| Erie to Orzesze | 4,406.14 mi (7,091.00 km) |
| Erie to Osowa | 4,230.22 mi (6,807.89 km) |
| Erie to Ostroda | 4,308.58 mi (6,933.99 km) |
| Erie to Ostroleka | 4,387.69 mi (7,061.30 km) |
| Erie to Ostrow Mazowiecka | 4,409.73 mi (7,096.78 km) |
| Erie to Ostrow Wielkopolski | 4,313.82 mi (6,942.42 km) |
| Erie to Ostrowiec Swietokrzyski | 4,468.81 mi (7,191.85 km) |
| Erie to Ostrzeszow | 4,326.99 mi (6,963.62 km) |
| Erie to Oswiecim | 4,427.66 mi (7,125.63 km) |
| Erie to Otwock | 4,415.90 mi (7,106.70 km) |
| Erie to Ozarow Mazowiecki | 4,395.81 mi (7,074.37 km) |
| Erie to Ozimek | 4,366.07 mi (7,026.51 km) |
| Erie to Ozorkow | 4,353.14 mi (7,005.70 km) |
| Erie to Pabianice | 4,369.16 mi (7,031.48 km) |
