| Ermua to Opole | 1,088.85 mi (1,752.34 km) |
| Ermua to Orzesze | 1,111.29 mi (1,788.45 km) |
| Ermua to Osowa | 1,222.14 mi (1,966.85 km) |
| Ermua to Ostroda | 1,251.41 mi (2,013.94 km) |
| Ermua to Ostroleka | 1,293.60 mi (2,081.85 km) |
| Ermua to Ostrow Mazowiecka | 1,299.75 mi (2,091.75 km) |
| Ermua to Ostrow Wielkopolski | 1,109.70 mi (1,785.90 km) |
| Ermua to Ostrowiec Swietokrzyski | 1,238.34 mi (1,992.92 km) |
| Ermua to Ostrzeszow | 1,107.95 mi (1,783.08 km) |
| Ermua to Oswiecim | 1,129.02 mi (1,816.99 km) |
| Ermua to Otwock | 1,258.29 mi (2,025.03 km) |
| Ermua to Ozarow Mazowiecki | 1,242.16 mi (1,999.07 km) |
| Ermua to Ozimek | 1,100.50 mi (1,771.09 km) |
| Ermua to Ozorkow | 1,175.95 mi (1,892.50 km) |
| Ermua to Pabianice | 1,171.76 mi (1,885.77 km) |
