| Willimantic to McHenry (Illinois) | 825.26 mi (1,328.13 km) |
| Willimantic to McKeesport (Pennsylvania) | 408.86 mi (658.00 km) |
| Willimantic to McKinleyville (California) | 2,649.95 mi (4,264.68 km) |
| Willimantic to McKinney (Texas) | 1,458.02 mi (2,346.46 km) |
| Willimantic to McLean (Virginia) | 324.88 mi (522.84 km) |
| Willimantic to McMinnville (Oregon) | 2,525.25 mi (4,064.00 km) |
| Willimantic to McMinnville (Tennessee) | 840.58 mi (1,352.79 km) |
| Willimantic to McNair (Virginia) | 333.86 mi (537.30 km) |
| Willimantic to McPherson (Kansas) | 1,360.66 mi (2,189.78 km) |
| Willimantic to Mead Valley (California) | 2,491.66 mi (4,009.94 km) |
| Willimantic to Meadow Woods (Florida) | 1,055.62 mi (1,698.85 km) |
| Willimantic to Meadowbrook (Virginia) | 407.62 mi (656.00 km) |
| Willimantic to Meadville (Pennsylvania) | 409.36 mi (658.81 km) |
| Willimantic to Mebane (North Carolina) | 543.33 mi (874.40 km) |
| Willimantic to Mechanicsville (Virginia) | 393.23 mi (632.85 km) |
