| San Mateo to Montgomeryville (Pennsylvania) | 2,508.15 mi (4,036.47 km) |
| San Mateo to Monticello (Minnesota) | 1,561.24 mi (2,512.57 km) |
| San Mateo to Montrose (Colorado) | 788.53 mi (1,269.02 km) |
| San Mateo to Moody (Alabama) | 2,018.92 mi (3,249.14 km) |
| San Mateo to Moore (Oklahoma) | 1,384.95 mi (2,228.87 km) |
| San Mateo to Moorestown-Lenola (New Jersey) | 2,526.39 mi (4,065.83 km) |
| San Mateo to Mooresville (North Carolina) | 2,287.43 mi (3,681.26 km) |
| San Mateo to Moorhead (Minnesota) | 1,449.17 mi (2,332.21 km) |
| San Mateo to Moorpark (California) | 296.39 mi (476.99 km) |
| San Mateo to Moraga (California) | 22.66 mi (36.47 km) |
| San Mateo to Moreno Valley (California) | 380.52 mi (612.38 km) |
| San Mateo to Morgan City (Louisiana) | 1,860.94 mi (2,994.89 km) |
| San Mateo to Morgan Hill (California) | 46.86 mi (75.42 km) |
| San Mateo to Morganton (North Carolina) | 2,237.30 mi (3,600.59 km) |
| San Mateo to Morgantown (West Virginia) | 2,271.10 mi (3,654.97 km) |
