| Ostrow Mazowiecka to Isny im Allgau | 630.59 mi (1,014.84 km) |
| Ostrow Mazowiecka to Isselburg | 653.99 mi (1,052.49 km) |
| Ostrow Mazowiecka to Issum | 660.29 mi (1,062.63 km) |
| Ostrow Mazowiecka to Itzehoe | 515.79 mi (830.09 km) |
| Ostrow Mazowiecka to Jena | 458.24 mi (737.46 km) |
| Ostrow Mazowiecka to Jever | 581.09 mi (935.18 km) |
| Ostrow Mazowiecka to Jork | 507.99 mi (817.53 km) |
| Ostrow Mazowiecka to Juchen | 664.81 mi (1,069.92 km) |
| Ostrow Mazowiecka to Julich | 674.33 mi (1,085.23 km) |
| Ostrow Mazowiecka to Juterbog | 376.06 mi (605.21 km) |
| Ostrow Mazowiecka to Kaarst | 657.84 mi (1,058.69 km) |
| Ostrow Mazowiecka to Kaiserslautern | 653.87 mi (1,052.30 km) |
| Ostrow Mazowiecka to Kalkar | 662.64 mi (1,066.42 km) |
| Ostrow Mazowiecka to Kall | 674.41 mi (1,085.36 km) |
| Ostrow Mazowiecka to Kaltenkirchen | 497.38 mi (800.46 km) |
