| Castricum to Indianola (Iowa) | 4,329.36 mi (6,967.44 km) |
| Castricum to Indio (California) | 5,497.16 mi (8,846.82 km) |
| Castricum to Inglewood (California) | 5,547.53 mi (8,927.88 km) |
| Castricum to Inkster (Michigan) | 3,912.63 mi (6,296.77 km) |
| Castricum to Inver Grove Heights (Minnesota) | 4,138.01 mi (6,659.49 km) |
| Castricum to Inwood (New York) | 3,623.52 mi (5,831.49 km) |
| Castricum to Iona (Florida) | 4,647.68 mi (7,479.71 km) |
| Castricum to Ionia (Michigan) | 3,945.01 mi (6,348.88 km) |
| Castricum to Iowa City (Iowa) | 4,242.67 mi (6,827.91 km) |
| Castricum to Irmo (South Carolina) | 4,229.96 mi (6,807.46 km) |
| Castricum to Irondale (Alabama) | 4,472.16 mi (7,197.24 km) |
| Castricum to Ironton (Ohio) | 4,069.32 mi (6,548.95 km) |
| Castricum to Irvine (California) | 5,547.03 mi (8,927.08 km) |
| Castricum to Irving (Texas) | 4,896.69 mi (7,880.45 km) |
| Castricum to Isabela (Puerto Rico) | 4,445.32 mi (7,154.05 km) |
