| Healdsburg to Monticello (Minnesota) | 1,553.25 mi (2,499.72 km) |
| Healdsburg to Montrose (Colorado) | 810.08 mi (1,303.69 km) |
| Healdsburg to Moody (Alabama) | 2,045.90 mi (3,292.56 km) |
| Healdsburg to Moore (Oklahoma) | 1,415.13 mi (2,277.44 km) |
| Healdsburg to Moorestown-Lenola (New Jersey) | 2,531.76 mi (4,074.48 km) |
| Healdsburg to Mooresville (North Carolina) | 2,305.84 mi (3,710.89 km) |
| Healdsburg to Moorhead (Minnesota) | 1,433.88 mi (2,307.61 km) |
| Healdsburg to Moorpark (California) | 372.59 mi (599.63 km) |
| Healdsburg to Moraga (California) | 67.21 mi (108.17 km) |
| Healdsburg to Moreno Valley (California) | 452.34 mi (727.98 km) |
| Healdsburg to Morgan City (Louisiana) | 1,901.56 mi (3,060.27 km) |
| Healdsburg to Morgan Hill (California) | 122.66 mi (197.41 km) |
| Healdsburg to Morganton (North Carolina) | 2,255.85 mi (3,630.44 km) |
| Healdsburg to Morgantown (West Virginia) | 2,279.19 mi (3,668.00 km) |
| Healdsburg to Morris (Illinois) | 1,820.47 mi (2,929.77 km) |
