| Ommen to Orzesze | 556.15 mi (895.04 km) |
| Ommen to Osowa | 512.29 mi (824.45 km) |
| Ommen to Ostroda | 567.04 mi (912.56 km) |
| Ommen to Ostroleka | 632.95 mi (1,018.63 km) |
| Ommen to Ostrow Mazowiecka | 647.94 mi (1,042.76 km) |
| Ommen to Ostrow Wielkopolski | 487.20 mi (784.07 km) |
| Ommen to Ostrowiec Swietokrzyski | 649.30 mi (1,044.96 km) |
| Ommen to Ostrzeszow | 495.56 mi (797.53 km) |
| Ommen to Oswiecim | 578.42 mi (930.88 km) |
| Ommen to Otwock | 626.71 mi (1,008.60 km) |
| Ommen to Ozarow Mazowiecki | 606.16 mi (975.52 km) |
| Ommen to Ozimek | 521.45 mi (839.19 km) |
| Ommen to Ozorkow | 544.96 mi (877.03 km) |
| Ommen to Pabianice | 553.03 mi (890.02 km) |
| Ommen to Parczew | 699.71 mi (1,126.07 km) |
