| Ostrow Mazowiecka to Bingol | 1,306.02 mi (2,101.83 km) |
| Ostrow Mazowiecka to Birecik | 1,337.59 mi (2,152.65 km) |
| Ostrow Mazowiecka to Bitlis | 1,385.06 mi (2,229.04 km) |
| Ostrow Mazowiecka to Bodrum | 1,121.26 mi (1,804.50 km) |
| Ostrow Mazowiecka to Bogazliyan | 1,133.60 mi (1,824.35 km) |
| Ostrow Mazowiecka to Bolu | 949.90 mi (1,528.71 km) |
| Ostrow Mazowiecka to Bolvadin | 1,066.35 mi (1,716.12 km) |
| Ostrow Mazowiecka to Bor | 1,196.29 mi (1,925.24 km) |
| Ostrow Mazowiecka to Borcka | 1,213.63 mi (1,953.15 km) |
| Ostrow Mazowiecka to Boyabat | 986.48 mi (1,587.59 km) |
| Ostrow Mazowiecka to Bozdogan | 1,089.65 mi (1,753.63 km) |
| Ostrow Mazowiecka to Bozkir | 1,188.40 mi (1,912.55 km) |
| Ostrow Mazowiecka to Bozkurt | 1,099.53 mi (1,769.52 km) |
| Ostrow Mazowiecka to Bozuyuk | 970.13 mi (1,561.28 km) |
| Ostrow Mazowiecka to Bucak | 1,139.57 mi (1,833.97 km) |
