| Castle Rock to Manor (Texas) | 748.45 mi (1,204.51 km) |
| Castle Rock to Manorville (New York) | 1,687.71 mi (2,716.11 km) |
| Castle Rock to Mansfield (Ohio) | 1,181.15 mi (1,900.88 km) |
| Castle Rock to Mansfield (Texas) | 638.35 mi (1,027.32 km) |
| Castle Rock to Manteca (California) | 889.79 mi (1,431.97 km) |
| Castle Rock to Manville (New Jersey) | 1,596.95 mi (2,570.04 km) |
| Castle Rock to Maple Grove (Minnesota) | 703.47 mi (1,132.12 km) |
| Castle Rock to Maple Heights (Ohio) | 1,229.91 mi (1,979.34 km) |
| Castle Rock to Maple Valley (Washington) | 1,021.02 mi (1,643.18 km) |
| Castle Rock to Mapleton (Utah) | 360.60 mi (580.34 km) |
| Castle Rock to Maplewood (Minnesota) | 717.87 mi (1,155.29 km) |
| Castle Rock to Marana (Arizona) | 594.93 mi (957.45 km) |
| Castle Rock to Marco Island (Florida) | 1,628.20 mi (2,620.34 km) |
| Castle Rock to Margate (Florida) | 1,685.51 mi (2,712.56 km) |
| Castle Rock to Maricopa (Arizona) | 591.53 mi (951.97 km) |
