| Ostrow Mazowiecka to Ratingen | 646.59 mi (1,040.58 km) |
| Ostrow Mazowiecka to Ratzeburg | 464.63 mi (747.74 km) |
| Ostrow Mazowiecka to Raubling | 553.13 mi (890.17 km) |
| Ostrow Mazowiecka to Rauenberg | 621.99 mi (1,000.99 km) |
| Ostrow Mazowiecka to Raunheim | 609.65 mi (981.14 km) |
| Ostrow Mazowiecka to Ravensburg | 642.44 mi (1,033.91 km) |
| Ostrow Mazowiecka to Recke | 595.10 mi (957.71 km) |
| Ostrow Mazowiecka to Recklinghausen | 628.71 mi (1,011.82 km) |
| Ostrow Mazowiecka to Regen | 464.45 mi (747.46 km) |
| Ostrow Mazowiecka to Regensburg | 500.61 mi (805.66 km) |
| Ostrow Mazowiecka to Regenstauf | 494.72 mi (796.17 km) |
| Ostrow Mazowiecka to Rehau | 459.46 mi (739.43 km) |
| Ostrow Mazowiecka to Rehburg-Loccum | 532.18 mi (856.46 km) |
| Ostrow Mazowiecka to Rehlingen-Siersburg | 700.27 mi (1,126.98 km) |
| Ostrow Mazowiecka to Reichelsheim | 602.56 mi (969.73 km) |
