| San Mateo to South Plainfield (New Jersey) | 2,546.33 mi (4,097.92 km) |
| San Mateo to South Portland (Maine) | 2,716.52 mi (4,371.82 km) |
| San Mateo to South Riding (Virginia) | 2,408.50 mi (3,876.10 km) |
| San Mateo to South River (New Jersey) | 2,549.99 mi (4,103.81 km) |
| San Mateo to South Salt Lake (Utah) | 598.68 mi (963.48 km) |
| San Mateo to South San Francisco (California) | 9.16 mi (14.74 km) |
| San Mateo to South San Jose Hills (California) | 347.57 mi (559.35 km) |
| San Mateo to South Sioux City (Nebraska) | 1,406.04 mi (2,262.80 km) |
| San Mateo to South St. Paul (Minnesota) | 1,593.27 mi (2,564.12 km) |
| San Mateo to South Valley (New Mexico) | 887.01 mi (1,427.50 km) |
| San Mateo to South Venice (Florida) | 2,420.35 mi (3,895.18 km) |
| San Mateo to South Whittier (California) | 346.53 mi (557.69 km) |
| San Mateo to South Yarmouth (Massachusetts) | 2,746.11 mi (4,419.44 km) |
| San Mateo to Southaven (Mississippi) | 1,801.63 mi (2,899.45 km) |
| San Mateo to Southchase (Florida) | 2,434.86 mi (3,918.52 km) |
