| Champaign to McKeesport (Pennsylvania) | 444.79 mi (715.82 km) |
| Champaign to McKinleyville (California) | 1,868.28 mi (3,006.71 km) |
| Champaign to McKinney (Texas) | 666.11 mi (1,072.01 km) |
| Champaign to McLean (Virginia) | 595.56 mi (958.45 km) |
| Champaign to McMinnville (Oregon) | 1,794.10 mi (2,887.33 km) |
| Champaign to McMinnville (Tennessee) | 334.71 mi (538.67 km) |
| Champaign to McNair (Virginia) | 584.01 mi (939.87 km) |
| Champaign to McPherson (Kansas) | 516.25 mi (830.83 km) |
| Champaign to Mead Valley (California) | 1,651.01 mi (2,657.04 km) |
| Champaign to Meadow Woods (Florida) | 902.02 mi (1,451.65 km) |
| Champaign to Meadowbrook (Virginia) | 610.13 mi (981.91 km) |
| Champaign to Meadville (Pennsylvania) | 437.38 mi (703.89 km) |
| Champaign to Mebane (North Carolina) | 562.58 mi (905.38 km) |
| Champaign to Mechanicsville (Virginia) | 611.47 mi (984.07 km) |
| Champaign to Medford (Massachusetts) | 903.95 mi (1,454.77 km) |
