| Castleford to Mauldin (South Carolina) | 3,977.46 mi (6,401.11 km) |
| Castleford to Maumee (Ohio) | 3,699.90 mi (5,954.41 km) |
| Castleford to Maumelle (Arkansas) | 4,362.59 mi (7,020.91 km) |
| Castleford to Mayagüez (Puerto Rico) | 4,225.72 mi (6,800.63 km) |
| Castleford to Mayfield Heights (Ohio) | 3,618.62 mi (5,823.60 km) |
| Castleford to Mays Chapel (Maryland) | 3,530.26 mi (5,681.40 km) |
| Castleford to Maywood (California) | 5,303.12 mi (8,534.54 km) |
| Castleford to Maywood (Illinois) | 3,840.89 mi (6,181.31 km) |
| Castleford to McAlester (Oklahoma) | 4,484.47 mi (7,217.05 km) |
| Castleford to McAllen (Texas) | 5,043.19 mi (8,116.23 km) |
| Castleford to McCalla (Alabama) | 4,236.89 mi (6,818.61 km) |
| Castleford to McComb (Mississippi) | 4,476.63 mi (7,204.44 km) |
| Castleford to McDonough (Georgia) | 4,117.45 mi (6,626.39 km) |
| Castleford to McFarland (California) | 5,237.27 mi (8,428.57 km) |
| Castleford to McHenry (Illinois) | 3,835.26 mi (6,172.25 km) |
