| Niles to McHenry (Illinois) | 32.77 mi (52.73 km) |
| Niles to McKeesport (Pennsylvania) | 430.10 mi (692.18 km) |
| Niles to McKinleyville (California) | 1,864.88 mi (3,001.24 km) |
| Niles to McKinney (Texas) | 778.09 mi (1,252.21 km) |
| Niles to McLean (Virginia) | 596.65 mi (960.22 km) |
| Niles to McMinnville (Oregon) | 1,769.03 mi (2,846.98 km) |
| Niles to McMinnville (Tennessee) | 451.50 mi (726.62 km) |
| Niles to McNair (Virginia) | 585.81 mi (942.76 km) |
| Niles to McPherson (Kansas) | 577.50 mi (929.39 km) |
| Niles to Mead Valley (California) | 1,693.12 mi (2,724.81 km) |
| Niles to Meadow Woods (Florida) | 1,010.97 mi (1,627.00 km) |
| Niles to Meadowbrook (Virginia) | 633.83 mi (1,020.04 km) |
| Niles to Meadville (Pennsylvania) | 395.21 mi (636.04 km) |
| Niles to Mebane (North Carolina) | 614.52 mi (988.97 km) |
| Niles to Mechanicsville (Virginia) | 631.95 mi (1,017.03 km) |
