| Castricum to McKeesport (Pennsylvania) | 3,873.71 mi (6,234.14 km) |
| Castricum to McKinleyville (California) | 5,288.20 mi (8,510.54 km) |
| Castricum to McKinney (Texas) | 4,867.20 mi (7,833.01 km) |
| Castricum to McLean (Virginia) | 3,836.84 mi (6,174.80 km) |
| Castricum to McMinnville (Oregon) | 5,010.04 mi (8,062.87 km) |
| Castricum to McMinnville (Tennessee) | 4,329.47 mi (6,967.61 km) |
| Castricum to McNair (Virginia) | 3,845.00 mi (6,187.92 km) |
| Castricum to McPherson (Kansas) | 4,627.97 mi (7,447.99 km) |
| Castricum to Mead Valley (California) | 5,523.17 mi (8,888.69 km) |
| Castricum to Meadow Woods (Florida) | 4,526.80 mi (7,285.18 km) |
| Castricum to Meadowbrook (Virginia) | 3,919.85 mi (6,308.40 km) |
| Castricum to Meadville (Pennsylvania) | 3,823.90 mi (6,153.97 km) |
| Castricum to Mebane (North Carolina) | 4,056.04 mi (6,527.56 km) |
| Castricum to Mechanicsville (Virginia) | 3,905.80 mi (6,285.78 km) |
| Castricum to Medford (Massachusetts) | 3,438.79 mi (5,534.20 km) |
