| Castricum to Blue Springs (Missouri) | 4,474.84 mi (7,201.57 km) |
| Castricum to Bluffdale (Utah) | 4,978.25 mi (8,011.72 km) |
| Castricum to Bluffton (Indiana) | 4,056.21 mi (6,527.84 km) |
| Castricum to Bluffton (South Carolina) | 4,314.15 mi (6,942.96 km) |
| Castricum to Blythe (California) | 5,454.00 mi (8,777.37 km) |
| Castricum to Blytheville (Arkansas) | 4,473.54 mi (7,199.46 km) |
| Castricum to Boca Raton (Florida) | 4,579.39 mi (7,369.81 km) |
| Castricum to Boerne (Texas) | 5,127.51 mi (8,251.93 km) |
| Castricum to Bogalusa (Louisiana) | 4,739.20 mi (7,627.00 km) |
| Castricum to Boiling Springs (South Carolina) | 4,213.82 mi (6,781.49 km) |
| Castricum to Boise (Idaho) | 4,923.21 mi (7,923.14 km) |
| Castricum to Bolingbrook (Illinois) | 4,117.75 mi (6,626.88 km) |
| Castricum to Bolivar (Missouri) | 4,516.86 mi (7,269.18 km) |
| Castricum to Bon Air (Virginia) | 3,919.45 mi (6,307.75 km) |
| Castricum to Bonham (Texas) | 4,829.11 mi (7,771.71 km) |
