| Castricum to Bonita (California) | 5,584.18 mi (8,986.87 km) |
| Castricum to Bonita Springs (Florida) | 4,648.92 mi (7,481.71 km) |
| Castricum to Bonney Lake (Washington) | 4,868.14 mi (7,834.52 km) |
| Castricum to Boone (Iowa) | 4,305.23 mi (6,928.60 km) |
| Castricum to Boone (North Carolina) | 4,143.91 mi (6,668.97 km) |
| Castricum to Borger (Texas) | 4,903.52 mi (7,891.46 km) |
| Castricum to Bossier City (Louisiana) | 4,792.27 mi (7,712.41 km) |
| Castricum to Boston (Massachusetts) | 3,442.46 mi (5,540.11 km) |
| Castricum to Bostonia (California) | 5,572.64 mi (8,968.30 km) |
| Castricum to Bothell (Washington) | 4,833.82 mi (7,779.28 km) |
| Castricum to Bothell East (Washington) | 4,831.40 mi (7,775.38 km) |
| Castricum to Bothell West (Washington) | 4,832.78 mi (7,777.61 km) |
| Castricum to Boulder (Colorado) | 4,794.73 mi (7,716.38 km) |
| Castricum to Boulder City (Nevada) | 5,334.51 mi (8,585.06 km) |
| Castricum to Bound Brook (New Jersey) | 3,657.00 mi (5,885.37 km) |
