| Ontario to Bound Brook (New Jersey) | 2,385.31 mi (3,838.79 km) |
| Ontario to Bountiful (Utah) | 567.18 mi (912.80 km) |
| Ontario to Bourbonnais (Illinois) | 1,690.91 mi (2,721.25 km) |
| Ontario to Bowie (Maryland) | 2,275.89 mi (3,662.69 km) |
| Ontario to Bowling Green (Kentucky) | 1,756.92 mi (2,827.49 km) |
| Ontario to Bowling Green (Ohio) | 1,910.70 mi (3,074.98 km) |
| Ontario to Box Elder (South Dakota) | 1,041.80 mi (1,676.62 km) |
| Ontario to Boynton Beach (Florida) | 2,284.87 mi (3,677.15 km) |
| Ontario to Bozeman (Montana) | 875.56 mi (1,409.08 km) |
| Ontario to Bradenton (Florida) | 2,117.62 mi (3,407.99 km) |
| Ontario to Bradfordville (Florida) | 1,956.51 mi (3,148.71 km) |
| Ontario to Bradley (Illinois) | 1,692.46 mi (2,723.74 km) |
| Ontario to Bradley Gardens (New Jersey) | 2,378.51 mi (3,827.84 km) |
| Ontario to Brainerd (Minnesota) | 1,490.92 mi (2,399.40 km) |
| Ontario to Brambleton (Virginia) | 2,233.34 mi (3,594.21 km) |
