| Castle Rock to Naugatuck (Connecticut) | 1,669.42 mi (2,686.67 km) |
| Castle Rock to Navarre (Florida) | 1,188.01 mi (1,911.91 km) |
| Castle Rock to Nederland (Texas) | 894.49 mi (1,439.55 km) |
| Castle Rock to Neenah (Wisconsin) | 904.52 mi (1,455.69 km) |
| Castle Rock to Neosho (Missouri) | 595.47 mi (958.32 km) |
| Castle Rock to Nesconset (New York) | 1,669.09 mi (2,686.15 km) |
| Castle Rock to New Albany (Indiana) | 1,024.85 mi (1,649.34 km) |
| Castle Rock to New Albany (Ohio) | 1,170.70 mi (1,884.06 km) |
| Castle Rock to New Baltimore (Michigan) | 1,171.51 mi (1,885.36 km) |
| Castle Rock to New Baltimore (Virginia) | 1,451.07 mi (2,335.27 km) |
| Castle Rock to New Bedford (Massachusetts) | 1,776.54 mi (2,859.07 km) |
| Castle Rock to New Berlin (Wisconsin) | 902.84 mi (1,452.98 km) |
| Castle Rock to New Bern (North Carolina) | 1,550.15 mi (2,494.73 km) |
| Castle Rock to New Braunfels (Texas) | 770.22 mi (1,239.55 km) |
| Castle Rock to New Brighton (Minnesota) | 712.85 mi (1,147.22 km) |
