| Ostrow Mazowiecka to Berga | 1,186.60 mi (1,909.65 km) |
| Ostrow Mazowiecka to Berja | 1,627.34 mi (2,618.95 km) |
| Ostrow Mazowiecka to Bermeo | 1,298.49 mi (2,089.73 km) |
| Ostrow Mazowiecka to Berriozar | 1,283.19 mi (2,065.10 km) |
| Ostrow Mazowiecka to Betanzos | 1,523.79 mi (2,452.31 km) |
| Ostrow Mazowiecka to Betera | 1,395.49 mi (2,245.83 km) |
| Ostrow Mazowiecka to Bilbao | 1,313.27 mi (2,113.51 km) |
| Ostrow Mazowiecka to Binefar | 1,255.02 mi (2,019.76 km) |
| Ostrow Mazowiecka to Binisalem | 1,277.49 mi (2,055.92 km) |
| Ostrow Mazowiecka to Blanes | 1,174.33 mi (1,889.90 km) |
| Ostrow Mazowiecka to Boadilla del Monte | 1,480.35 mi (2,382.39 km) |
| Ostrow Mazowiecka to Boiro | 1,577.70 mi (2,539.06 km) |
| Ostrow Mazowiecka to Bolanos de Calatrava | 1,549.36 mi (2,493.46 km) |
| Ostrow Mazowiecka to Bollullos de la Mitacion | 1,717.23 mi (2,763.61 km) |
| Ostrow Mazowiecka to Bollullos par del Condado | 1,732.11 mi (2,787.56 km) |
