| Castle Rock to Medford (New York) | 1,677.93 mi (2,700.37 km) |
| Castle Rock to Medford (Oregon) | 960.71 mi (1,546.11 km) |
| Castle Rock to Medina (Ohio) | 1,214.46 mi (1,954.49 km) |
| Castle Rock to Medulla (Florida) | 1,526.80 mi (2,457.14 km) |
| Castle Rock to Mehlville (Missouri) | 782.81 mi (1,259.82 km) |
| Castle Rock to Melbourne (Florida) | 1,585.63 mi (2,551.83 km) |
| Castle Rock to Melissa (Texas) | 624.07 mi (1,004.35 km) |
| Castle Rock to Melrose (Massachusetts) | 1,765.47 mi (2,841.25 km) |
| Castle Rock to Melrose Park (Illinois) | 906.12 mi (1,458.27 km) |
| Castle Rock to Melville (New York) | 1,656.32 mi (2,665.59 km) |
| Castle Rock to Melvindale (Michigan) | 1,147.58 mi (1,846.85 km) |
| Castle Rock to Memphis (Florida) | 1,516.46 mi (2,440.51 km) |
| Castle Rock to Memphis (Tennessee) | 869.04 mi (1,398.59 km) |
| Castle Rock to Menasha (Wisconsin) | 907.75 mi (1,460.88 km) |
| Castle Rock to Mendota (California) | 862.50 mi (1,388.05 km) |
