| Castleford to McKeesport (Pennsylvania) | 3,612.01 mi (5,812.97 km) |
| Castleford to McKinleyville (California) | 5,067.55 mi (8,155.43 km) |
| Castleford to McKinney (Texas) | 4,608.41 mi (7,416.52 km) |
| Castleford to McLean (Virginia) | 3,574.62 mi (5,752.79 km) |
| Castleford to McMinnville (Oregon) | 4,793.67 mi (7,714.67 km) |
| Castleford to McMinnville (Tennessee) | 4,067.77 mi (6,546.45 km) |
| Castleford to McNair (Virginia) | 3,582.78 mi (5,765.93 km) |
| Castleford to McPherson (Kansas) | 4,373.07 mi (7,037.78 km) |
| Castleford to Mead Valley (California) | 5,283.91 mi (8,503.63 km) |
| Castleford to Meadow Woods (Florida) | 4,265.57 mi (6,864.78 km) |
| Castleford to Meadowbrook (Virginia) | 3,657.62 mi (5,886.37 km) |
| Castleford to Meadville (Pennsylvania) | 3,562.68 mi (5,733.58 km) |
| Castleford to Mebane (North Carolina) | 3,793.80 mi (6,105.54 km) |
| Castleford to Mechanicsville (Virginia) | 3,643.57 mi (5,863.76 km) |
| Castleford to Medford (Massachusetts) | 3,176.55 mi (5,112.17 km) |
