| Ostrow Mazowiecka to Aleksandrow Lodzki | 128.90 mi (207.44 km) |
| Ostrow Mazowiecka to Andrychow | 231.50 mi (372.56 km) |
| Ostrow Mazowiecka to Augustow | 84.75 mi (136.40 km) |
| Ostrow Mazowiecka to Banino | 180.59 mi (290.64 km) |
| Ostrow Mazowiecka to Barlinek | 279.48 mi (449.78 km) |
| Ostrow Mazowiecka to Bartoszyce | 109.90 mi (176.86 km) |
| Ostrow Mazowiecka to Bedzin | 208.14 mi (334.97 km) |
| Ostrow Mazowiecka to Belchatow | 146.19 mi (235.27 km) |
| Ostrow Mazowiecka to Biala Podlaska | 73.72 mi (118.64 km) |
| Ostrow Mazowiecka to Bialogard | 257.36 mi (414.18 km) |
| Ostrow Mazowiecka to Bialy Kamien | 278.59 mi (448.35 km) |
| Ostrow Mazowiecka to Bialystok | 56.77 mi (91.37 km) |
| Ostrow Mazowiecka to Bielawa | 268.46 mi (432.04 km) |
| Ostrow Mazowiecka to Bielsk Podlaski | 54.37 mi (87.51 km) |
| Ostrow Mazowiecka to Bielsko-Biala | 239.82 mi (385.95 km) |
