| Ontario to Blue Island (Illinois) | 1,705.44 mi (2,744.64 km) |
| Ontario to Blue Springs (Missouri) | 1,336.23 mi (2,150.45 km) |
| Ontario to Bluffdale (Utah) | 542.72 mi (873.43 km) |
| Ontario to Bluffton (Indiana) | 1,828.33 mi (2,942.41 km) |
| Ontario to Bluffton (South Carolina) | 2,114.57 mi (3,403.07 km) |
| Ontario to Blythe (California) | 173.83 mi (279.76 km) |
| Ontario to Blytheville (Arkansas) | 1,568.30 mi (2,523.93 km) |
| Ontario to Boca Raton (Florida) | 2,287.37 mi (3,681.16 km) |
| Ontario to Boerne (Texas) | 1,143.62 mi (1,840.49 km) |
| Ontario to Bogalusa (Louisiana) | 1,628.81 mi (2,621.31 km) |
| Ontario to Boiling Springs (South Carolina) | 2,018.08 mi (3,247.79 km) |
| Ontario to Boise (Idaho) | 664.72 mi (1,069.77 km) |
| Ontario to Bolingbrook (Illinois) | 1,684.27 mi (2,710.57 km) |
| Ontario to Bolivar (Missouri) | 1,373.38 mi (2,210.24 km) |
| Ontario to Bon Air (Virginia) | 2,240.08 mi (3,605.06 km) |
