| Placentia to Blue Island (Illinois) | 1,723.12 mi (2,773.10 km) |
| Placentia to Blue Springs (Missouri) | 1,353.55 mi (2,178.32 km) |
| Placentia to Bluffdale (Utah) | 559.74 mi (900.82 km) |
| Placentia to Bluffton (Indiana) | 1,845.84 mi (2,970.59 km) |
| Placentia to Bluffton (South Carolina) | 2,130.09 mi (3,428.04 km) |
| Placentia to Blythe (California) | 186.74 mi (300.53 km) |
| Placentia to Blytheville (Arkansas) | 1,584.65 mi (2,550.25 km) |
| Placentia to Boca Raton (Florida) | 2,301.06 mi (3,703.19 km) |
| Placentia to Boerne (Texas) | 1,155.92 mi (1,860.28 km) |
| Placentia to Bogalusa (Louisiana) | 1,643.08 mi (2,644.28 km) |
| Placentia to Boiling Springs (South Carolina) | 2,034.37 mi (3,274.00 km) |
| Placentia to Boise (Idaho) | 677.22 mi (1,089.87 km) |
| Placentia to Bolingbrook (Illinois) | 1,701.96 mi (2,739.04 km) |
| Placentia to Bolivar (Missouri) | 1,390.28 mi (2,237.44 km) |
| Placentia to Bon Air (Virginia) | 2,257.04 mi (3,632.35 km) |
