| Castle Rock to Marietta (Georgia) | 1,183.35 mi (1,904.42 km) |
| Castle Rock to Marietta (Ohio) | 1,246.18 mi (2,005.54 km) |
| Castle Rock to Marina (California) | 938.86 mi (1,510.95 km) |
| Castle Rock to Marinette (Wisconsin) | 962.75 mi (1,549.40 km) |
| Castle Rock to Marion (Arkansas) | 854.01 mi (1,374.40 km) |
| Castle Rock to Marion (Illinois) | 866.02 mi (1,393.72 km) |
| Castle Rock to Marion (Indiana) | 1,017.62 mi (1,637.70 km) |
| Castle Rock to Marion (Iowa) | 718.13 mi (1,155.72 km) |
| Castle Rock to Marion (Ohio) | 1,150.56 mi (1,851.65 km) |
| Castle Rock to Marion Oaks (Florida) | 1,474.10 mi (2,372.33 km) |
| Castle Rock to Markham (Illinois) | 913.30 mi (1,469.81 km) |
| Castle Rock to Marlborough (Massachusetts) | 1,741.25 mi (2,802.27 km) |
| Castle Rock to Marlton (New Jersey) | 1,585.11 mi (2,550.98 km) |
| Castle Rock to Marquette (Michigan) | 1,008.43 mi (1,622.91 km) |
| Castle Rock to Marrero (Louisiana) | 1,061.61 mi (1,708.49 km) |
