| San Mateo to Owosso (Michigan) | 2,027.28 mi (3,262.59 km) |
| San Mateo to Oxford (Alabama) | 2,053.28 mi (3,304.44 km) |
| San Mateo to Oxford (Mississippi) | 1,837.08 mi (2,956.50 km) |
| San Mateo to Oxford (Ohio) | 2,020.33 mi (3,251.41 km) |
| San Mateo to Oxnard (California) | 290.61 mi (467.70 km) |
| San Mateo to Oxon Hill (Maryland) | 2,438.73 mi (3,924.76 km) |
| San Mateo to Ozark (Alabama) | 2,115.99 mi (3,405.35 km) |
| San Mateo to Ozark (Missouri) | 1,593.29 mi (2,564.15 km) |
| San Mateo to Pace (Florida) | 2,054.67 mi (3,306.67 km) |
| San Mateo to Pacific Grove (California) | 67.91 mi (109.30 km) |
| San Mateo to Pacifica (California) | 9.97 mi (16.04 km) |
| San Mateo to Paducah (Kentucky) | 1,840.48 mi (2,961.97 km) |
| San Mateo to Pahrump (Nevada) | 360.75 mi (580.58 km) |
| San Mateo to Painesville (Ohio) | 2,182.70 mi (3,512.72 km) |
| San Mateo to Palatine (Illinois) | 1,832.71 mi (2,949.46 km) |
