| Gross-Gerau to Orzesze | 455.48 mi (733.03 km) |
| Gross-Gerau to Osowa | 524.61 mi (844.29 km) |
| Gross-Gerau to Ostroda | 554.80 mi (892.87 km) |
| Gross-Gerau to Ostroleka | 602.23 mi (969.20 km) |
| Gross-Gerau to Ostrow Mazowiecka | 610.95 mi (983.24 km) |
| Gross-Gerau to Ostrow Wielkopolski | 424.46 mi (683.10 km) |
| Gross-Gerau to Ostrowiec Swietokrzyski | 572.04 mi (920.60 km) |
| Gross-Gerau to Ostrzeszow | 426.17 mi (685.85 km) |
| Gross-Gerau to Oswiecim | 476.70 mi (767.18 km) |
| Gross-Gerau to Otwock | 575.07 mi (925.49 km) |
| Gross-Gerau to Ozarow Mazowiecki | 556.97 mi (896.36 km) |
| Gross-Gerau to Ozimek | 432.21 mi (695.57 km) |
| Gross-Gerau to Ozorkow | 490.40 mi (789.22 km) |
| Gross-Gerau to Pabianice | 490.35 mi (789.14 km) |
| Gross-Gerau to Parczew | 638.32 mi (1,027.27 km) |
