| Ostrow Mazowiecka to Rodgau | 592.04 mi (952.80 km) |
| Ostrow Mazowiecka to Roding | 477.29 mi (768.12 km) |
| Ostrow Mazowiecka to Rodinghausen | 564.47 mi (908.43 km) |
| Ostrow Mazowiecka to Roetgen | 686.68 mi (1,105.10 km) |
| Ostrow Mazowiecka to Rommerskirchen | 658.21 mi (1,059.28 km) |
| Ostrow Mazowiecka to Ronnenberg | 514.76 mi (828.43 km) |
| Ostrow Mazowiecka to Rosbach vor der Hohe | 591.88 mi (952.54 km) |
| Ostrow Mazowiecka to Rosdorf | 515.98 mi (830.39 km) |
| Ostrow Mazowiecka to Rosenheim | 549.27 mi (883.96 km) |
| Ostrow Mazowiecka to Rosrath | 640.48 mi (1,030.75 km) |
| Ostrow Mazowiecka to Rossdorf | 601.73 mi (968.39 km) |
| Ostrow Mazowiecka to Rosstal | 531.85 mi (855.92 km) |
| Ostrow Mazowiecka to Rostock | 411.25 mi (661.84 km) |
| Ostrow Mazowiecka to Rotenburg an der Fulda | 533.01 mi (857.79 km) |
| Ostrow Mazowiecka to Roth | 529.32 mi (851.85 km) |
