| Ostrow Mazowiecka to Bonita (California) | 6,035.47 mi (9,713.16 km) |
| Ostrow Mazowiecka to Bonita Springs (Florida) | 5,318.21 mi (8,558.84 km) |
| Ostrow Mazowiecka to Bonney Lake (Washington) | 5,212.05 mi (8,387.99 km) |
| Ostrow Mazowiecka to Boone (Iowa) | 4,852.17 mi (7,808.81 km) |
| Ostrow Mazowiecka to Boone (North Carolina) | 4,776.94 mi (7,687.74 km) |
| Ostrow Mazowiecka to Borger (Texas) | 5,442.88 mi (8,759.48 km) |
| Ostrow Mazowiecka to Bossier City (Louisiana) | 5,387.98 mi (8,671.11 km) |
| Ostrow Mazowiecka to Boston (Massachusetts) | 4,085.97 mi (6,575.74 km) |
| Ostrow Mazowiecka to Bostonia (California) | 6,023.84 mi (9,694.43 km) |
| Ostrow Mazowiecka to Bothell (Washington) | 5,174.43 mi (8,327.45 km) |
| Ostrow Mazowiecka to Bothell East (Washington) | 5,171.98 mi (8,323.50 km) |
| Ostrow Mazowiecka to Bothell West (Washington) | 5,172.98 mi (8,325.11 km) |
| Ostrow Mazowiecka to Boulder (Colorado) | 5,288.87 mi (8,511.61 km) |
| Ostrow Mazowiecka to Boulder City (Nevada) | 5,786.17 mi (9,311.95 km) |
| Ostrow Mazowiecka to Bound Brook (New Jersey) | 4,297.01 mi (6,915.37 km) |
