| Castricum to Portage (Michigan) | 4,001.22 mi (6,439.34 km) |
| Castricum to Portage (Wisconsin) | 4,075.73 mi (6,559.26 km) |
| Castricum to Portales (New Mexico) | 5,052.40 mi (8,131.05 km) |
| Castricum to Porterville (California) | 5,442.98 mi (8,759.63 km) |
| Castricum to Portland (Maine) | 3,351.48 mi (5,393.68 km) |
| Castricum to Portland (Oregon) | 4,977.30 mi (8,010.19 km) |
| Castricum to Portland (Tennessee) | 4,312.29 mi (6,939.96 km) |
| Castricum to Portland (Texas) | 5,178.28 mi (8,333.64 km) |
| Castricum to Portsmouth (New Hampshire) | 3,398.25 mi (5,468.96 km) |
| Castricum to Portsmouth (Ohio) | 4,068.75 mi (6,548.02 km) |
| Castricum to Portsmouth (Virginia) | 3,903.37 mi (6,281.86 km) |
| Castricum to Post Falls (Idaho) | 4,705.19 mi (7,572.28 km) |
| Castricum to Potomac (Maryland) | 3,833.51 mi (6,169.45 km) |
| Castricum to Potomac Park (California) | 5,482.48 mi (8,823.19 km) |
| Castricum to Pottstown (Pennsylvania) | 3,714.98 mi (5,978.69 km) |
