| Ostrow Mazowiecka to Brescia | 726.41 mi (1,169.04 km) |
| Ostrow Mazowiecka to Bressanone | 619.94 mi (997.70 km) |
| Ostrow Mazowiecka to Bresso | 761.02 mi (1,224.74 km) |
| Ostrow Mazowiecka to Brindisi | 861.04 mi (1,385.71 km) |
| Ostrow Mazowiecka to Broni | 782.15 mi (1,258.74 km) |
| Ostrow Mazowiecka to Bronte | 1,091.64 mi (1,756.82 km) |
| Ostrow Mazowiecka to Brugherio | 756.18 mi (1,216.96 km) |
| Ostrow Mazowiecka to Brugnera | 635.38 mi (1,022.55 km) |
| Ostrow Mazowiecka to Bruino | 845.14 mi (1,360.12 km) |
| Ostrow Mazowiecka to Brunico | 606.91 mi (976.72 km) |
| Ostrow Mazowiecka to Brusciano | 892.78 mi (1,436.79 km) |
| Ostrow Mazowiecka to Bucine | 797.80 mi (1,283.93 km) |
| Ostrow Mazowiecka to Budrio | 739.18 mi (1,189.60 km) |
| Ostrow Mazowiecka to Busca | 869.76 mi (1,399.75 km) |
| Ostrow Mazowiecka to Bussolengo | 710.02 mi (1,142.66 km) |
