| Willoughby to Mineola (New York) | 408.51 mi (657.43 km) |
| Willoughby to Mineral Wells (Texas) | 1,098.31 mi (1,767.57 km) |
| Willoughby to Minneapolis (Minnesota) | 638.08 mi (1,026.89 km) |
| Willoughby to Minnehaha (Washington) | 2,055.80 mi (3,308.49 km) |
| Willoughby to Minneola (Florida) | 901.11 mi (1,450.19 km) |
| Willoughby to Minnetonka (Minnesota) | 646.46 mi (1,040.38 km) |
| Willoughby to Minooka (Illinois) | 355.44 mi (572.03 km) |
| Willoughby to Minot (North Dakota) | 1,069.02 mi (1,720.43 km) |
| Willoughby to Mint Hill (North Carolina) | 448.73 mi (722.16 km) |
| Willoughby to Miramar (Florida) | 1,084.32 mi (1,745.05 km) |
| Willoughby to Mishawaka (Indiana) | 245.59 mi (395.24 km) |
| Willoughby to Mission (Texas) | 1,436.46 mi (2,311.76 km) |
| Willoughby to Mission Bend (Texas) | 1,146.83 mi (1,845.65 km) |
| Willoughby to Mission Viejo (California) | 2,043.17 mi (3,288.17 km) |
| Willoughby to Missoula (Montana) | 1,641.11 mi (2,641.12 km) |
