| Hamm to Orzesze | 487.39 mi (784.38 km) |
| Hamm to Osowa | 480.73 mi (773.66 km) |
| Hamm to Ostroda | 526.81 mi (847.82 km) |
| Hamm to Ostroleka | 586.86 mi (944.46 km) |
| Hamm to Ostrow Mazowiecka | 599.82 mi (965.32 km) |
| Hamm to Ostrow Wielkopolski | 428.20 mi (689.13 km) |
| Hamm to Ostrowiec Swietokrzyski | 588.12 mi (946.49 km) |
| Hamm to Ostrzeszow | 434.70 mi (699.57 km) |
| Hamm to Oswiecim | 509.63 mi (820.18 km) |
| Hamm to Otwock | 573.37 mi (922.75 km) |
| Hamm to Ozarow Mazowiecki | 553.38 mi (890.58 km) |
| Hamm to Ozimek | 455.29 mi (732.72 km) |
| Hamm to Ozorkow | 489.55 mi (787.86 km) |
| Hamm to Pabianice | 495.16 mi (796.89 km) |
| Hamm to Parczew | 643.94 mi (1,036.32 km) |
