| San Mateo to Ashtabula (Ohio) | 2,204.83 mi (3,548.33 km) |
| San Mateo to Ashwaubenon (Wisconsin) | 1,832.54 mi (2,949.20 km) |
| San Mateo to Aspen Hill (Maryland) | 2,428.46 mi (3,908.24 km) |
| San Mateo to Astoria (Oregon) | 601.41 mi (967.87 km) |
| San Mateo to Atascadero (California) | 169.11 mi (272.16 km) |
| San Mateo to Atascocita (Texas) | 1,636.28 mi (2,633.34 km) |
| San Mateo to Atchison (Kansas) | 1,469.23 mi (2,364.50 km) |
| San Mateo to Athens (Alabama) | 1,970.06 mi (3,170.50 km) |
| San Mateo to Athens (Georgia) | 2,182.21 mi (3,511.93 km) |
| San Mateo to Athens (Ohio) | 2,161.75 mi (3,479.01 km) |
| San Mateo to Athens (Tennessee) | 2,085.18 mi (3,355.78 km) |
| San Mateo to Athens (Texas) | 1,540.15 mi (2,478.63 km) |
| San Mateo to Atlanta (Georgia) | 2,128.76 mi (3,425.91 km) |
| San Mateo to Atlantic Beach (Florida) | 2,377.37 mi (3,826.01 km) |
| San Mateo to Atlantic City (New Jersey) | 2,561.61 mi (4,122.51 km) |
