| Rock Hill to McHenry (Illinois) | 643.75 mi (1,036.01 km) |
| Rock Hill to McKeesport (Pennsylvania) | 378.66 mi (609.39 km) |
| Rock Hill to McKinleyville (California) | 2,358.46 mi (3,795.57 km) |
| Rock Hill to McKinney (Texas) | 902.37 mi (1,452.22 km) |
| Rock Hill to McLean (Virginia) | 348.04 mi (560.12 km) |
| Rock Hill to McMinnville (Oregon) | 2,310.13 mi (3,717.79 km) |
| Rock Hill to McMinnville (Tennessee) | 273.07 mi (439.46 km) |
| Rock Hill to McNair (Virginia) | 341.32 mi (549.31 km) |
| Rock Hill to McPherson (Kansas) | 950.62 mi (1,529.87 km) |
| Rock Hill to Mead Valley (California) | 2,057.60 mi (3,311.39 km) |
| Rock Hill to Meadow Woods (Florida) | 454.46 mi (731.38 km) |
| Rock Hill to Meadowbrook (Virginia) | 262.18 mi (421.94 km) |
| Rock Hill to Meadville (Pennsylvania) | 465.77 mi (749.59 km) |
| Rock Hill to Mebane (North Carolina) | 126.24 mi (203.16 km) |
| Rock Hill to Mechanicsville (Virginia) | 275.90 mi (444.02 km) |
