| Ermelo to Orzesze | 586.47 mi (943.83 km) |
| Ermelo to Osowa | 549.10 mi (883.70 km) |
| Ermelo to Ostroda | 603.41 mi (971.09 km) |
| Ermelo to Ostroleka | 668.78 mi (1,076.30 km) |
| Ermelo to Ostrow Mazowiecka | 683.52 mi (1,100.03 km) |
| Ermelo to Ostrow Wielkopolski | 520.56 mi (837.77 km) |
| Ermelo to Ostrowiec Swietokrzyski | 682.28 mi (1,098.02 km) |
| Ermelo to Ostrzeszow | 528.46 mi (850.47 km) |
| Ermelo to Oswiecim | 608.74 mi (979.68 km) |
| Ermelo to Otwock | 661.45 mi (1,064.50 km) |
| Ermelo to Ozarow Mazowiecki | 640.98 mi (1,031.56 km) |
| Ermelo to Ozimek | 552.73 mi (889.53 km) |
| Ermelo to Ozorkow | 579.21 mi (932.15 km) |
| Ermelo to Pabianice | 586.76 mi (944.30 km) |
| Ermelo to Parczew | 734.03 mi (1,181.30 km) |
