| Healdsburg to Mauldin (South Carolina) | 2,244.29 mi (3,611.83 km) |
| Healdsburg to Maumee (Ohio) | 2,064.12 mi (3,321.87 km) |
| Healdsburg to Maumelle (Arkansas) | 1,698.91 mi (2,734.12 km) |
| Healdsburg to Mayagüez (Puerto Rico) | 3,606.56 mi (5,804.20 km) |
| Healdsburg to Mayfield Heights (Ohio) | 2,177.78 mi (3,504.79 km) |
| Healdsburg to Mays Chapel (Maryland) | 2,453.40 mi (3,948.36 km) |
| Healdsburg to Maywood (California) | 412.58 mi (663.99 km) |
| Healdsburg to Maywood (Illinois) | 1,847.50 mi (2,973.26 km) |
| Healdsburg to McAlester (Oklahoma) | 1,515.27 mi (2,438.59 km) |
| Healdsburg to McAllen (Texas) | 1,663.77 mi (2,677.57 km) |
| Healdsburg to McCalla (Alabama) | 2,024.28 mi (3,257.77 km) |
| Healdsburg to McComb (Mississippi) | 1,893.48 mi (3,047.27 km) |
| Healdsburg to McDonough (Georgia) | 2,176.29 mi (3,502.40 km) |
| Healdsburg to McFarland (California) | 284.93 mi (458.54 km) |
| Healdsburg to McHenry (Illinois) | 1,822.22 mi (2,932.57 km) |
