| Healdsburg to Marysville (California) | 78.03 mi (125.58 km) |
| Healdsburg to Marysville (Ohio) | 2,093.91 mi (3,369.82 km) |
| Healdsburg to Marysville (Washington) | 654.48 mi (1,053.29 km) |
| Healdsburg to Maryville (Missouri) | 1,491.39 mi (2,400.16 km) |
| Healdsburg to Maryville (Tennessee) | 2,133.76 mi (3,433.96 km) |
| Healdsburg to Mason (Ohio) | 2,055.67 mi (3,308.28 km) |
| Healdsburg to Mason City (Iowa) | 1,572.18 mi (2,530.18 km) |
| Healdsburg to Massapequa (New York) | 2,596.84 mi (4,179.20 km) |
| Healdsburg to Massapequa Park (New York) | 2,597.68 mi (4,180.56 km) |
| Healdsburg to Massillon (Ohio) | 2,182.24 mi (3,511.97 km) |
| Healdsburg to Mastic (New York) | 2,626.24 mi (4,226.53 km) |
| Healdsburg to Mastic Beach (New York) | 2,627.50 mi (4,228.55 km) |
| Healdsburg to Matteson (Illinois) | 1,854.82 mi (2,985.04 km) |
| Healdsburg to Matthews (North Carolina) | 2,322.19 mi (3,737.20 km) |
| Healdsburg to Mattoon (Illinois) | 1,840.91 mi (2,962.66 km) |
