| San Mateo to Anoka (Minnesota) | 1,579.88 mi (2,542.57 km) |
| San Mateo to Ansonia (Connecticut) | 2,605.05 mi (4,192.42 km) |
| San Mateo to Antelope (California) | 95.55 mi (153.77 km) |
| San Mateo to Anthem (Arizona) | 625.98 mi (1,007.41 km) |
| San Mateo to Antioch (California) | 40.78 mi (65.63 km) |
| San Mateo to Antioch (Illinois) | 1,830.68 mi (2,946.19 km) |
| San Mateo to Apache Junction (Arizona) | 670.31 mi (1,078.75 km) |
| San Mateo to Apex (North Carolina) | 2,390.08 mi (3,846.46 km) |
| San Mateo to Apollo Beach (Florida) | 2,398.54 mi (3,860.07 km) |
| San Mateo to Apopka (Florida) | 2,417.49 mi (3,890.58 km) |
| San Mateo to Apple Valley (California) | 352.99 mi (568.09 km) |
| San Mateo to Apple Valley (Minnesota) | 1,584.15 mi (2,549.44 km) |
| San Mateo to Appleton (Wisconsin) | 1,816.99 mi (2,924.17 km) |
| San Mateo to Arbutus (Maryland) | 2,446.74 mi (3,937.64 km) |
| San Mateo to Arcadia (California) | 336.22 mi (541.09 km) |
