| Castle Rock to Iselin (New Jersey) | 1,610.88 mi (2,592.46 km) |
| Castle Rock to Isla Vista (California) | 895.96 mi (1,441.91 km) |
| Castle Rock to Issaquah (Washington) | 1,026.99 mi (1,652.77 km) |
| Castle Rock to Ithaca (New York) | 1,488.38 mi (2,395.32 km) |
| Castle Rock to Ives Estates (Florida) | 1,699.21 mi (2,734.61 km) |
| Castle Rock to Jackson (Michigan) | 1,084.86 mi (1,745.92 km) |
| Castle Rock to Jackson (Mississippi) | 952.33 mi (1,532.63 km) |
| Castle Rock to Jackson (Missouri) | 833.81 mi (1,341.90 km) |
| Castle Rock to Jackson (Tennessee) | 913.33 mi (1,469.86 km) |
| Castle Rock to Jackson (Wyoming) | 417.15 mi (671.34 km) |
| Castle Rock to Jacksonville (Alabama) | 1,124.49 mi (1,809.69 km) |
| Castle Rock to Jacksonville (Arkansas) | 765.69 mi (1,232.27 km) |
| Castle Rock to Jacksonville (Florida) | 1,449.48 mi (2,332.71 km) |
| Castle Rock to Jacksonville (Illinois) | 778.47 mi (1,252.83 km) |
| Castle Rock to Jacksonville (North Carolina) | 1,541.52 mi (2,480.84 km) |
