| Thornton Heath to McKeesport (Pennsylvania) | 3,717.00 mi (5,981.94 km) |
| Thornton Heath to McKinleyville (California) | 5,222.78 mi (8,405.25 km) |
| Thornton Heath to McKinney (Texas) | 4,725.12 mi (7,604.34 km) |
| Thornton Heath to McLean (Virginia) | 3,672.54 mi (5,910.38 km) |
| Thornton Heath to McMinnville (Oregon) | 4,950.89 mi (7,967.68 km) |
| Thornton Heath to McMinnville (Tennessee) | 4,172.35 mi (6,714.76 km) |
| Thornton Heath to McNair (Virginia) | 3,681.06 mi (5,924.09 km) |
| Thornton Heath to McPherson (Kansas) | 4,498.77 mi (7,240.07 km) |
| Thornton Heath to Mead Valley (California) | 5,427.57 mi (8,734.83 km) |
| Thornton Heath to Meadow Woods (Florida) | 4,348.53 mi (6,998.28 km) |
| Thornton Heath to Meadowbrook (Virginia) | 3,752.61 mi (6,039.24 km) |
| Thornton Heath to Meadville (Pennsylvania) | 3,670.91 mi (5,907.75 km) |
| Thornton Heath to Mebane (North Carolina) | 3,888.81 mi (6,258.44 km) |
| Thornton Heath to Mechanicsville (Virginia) | 3,738.80 mi (6,017.02 km) |
| Thornton Heath to Medford (Massachusetts) | 3,273.54 mi (5,268.25 km) |
