| Castle Rock to North Tustin (California) | 814.99 mi (1,311.60 km) |
| Castle Rock to North Valley (New Mexico) | 306.22 mi (492.82 km) |
| Castle Rock to North Valley Stream (New York) | 1,641.62 mi (2,641.94 km) |
| Castle Rock to North Wantagh (New York) | 1,651.85 mi (2,658.40 km) |
| Castle Rock to Northampton (Massachusetts) | 1,683.93 mi (2,710.02 km) |
| Castle Rock to Northampton (Pennsylvania) | 1,548.84 mi (2,492.62 km) |
| Castle Rock to Northbrook (Illinois) | 909.19 mi (1,463.19 km) |
| Castle Rock to Northbrook (Ohio) | 1,081.56 mi (1,740.60 km) |
| Castle Rock to Northdale (Florida) | 1,494.34 mi (2,404.91 km) |
| Castle Rock to Northfield (Minnesota) | 694.71 mi (1,118.02 km) |
| Castle Rock to Northglenn (Colorado) | 37.52 mi (60.39 km) |
| Castle Rock to Northlake (Illinois) | 904.06 mi (1,454.94 km) |
| Castle Rock to Northport (Alabama) | 1,047.19 mi (1,685.29 km) |
| Castle Rock to Northview (Michigan) | 1,029.73 mi (1,657.18 km) |
| Castle Rock to Norton (Ohio) | 1,226.35 mi (1,973.63 km) |
