| San Mateo to University Place (Washington) | 667.72 mi (1,074.59 km) |
| San Mateo to Upland (California) | 352.33 mi (567.02 km) |
| San Mateo to Upper Arlington (Ohio) | 2,103.19 mi (3,384.75 km) |
| San Mateo to Upper Grand Lagoon (Florida) | 2,145.01 mi (3,452.06 km) |
| San Mateo to Upper Montclair (New Jersey) | 2,553.77 mi (4,109.90 km) |
| San Mateo to Urbana (Illinois) | 1,833.38 mi (2,950.54 km) |
| San Mateo to Urbana (Maryland) | 2,411.51 mi (3,880.96 km) |
| San Mateo to Urbana (Ohio) | 2,066.61 mi (3,325.88 km) |
| San Mateo to Urbandale (Iowa) | 1,537.70 mi (2,474.69 km) |
| San Mateo to Utica (New York) | 2,476.73 mi (3,985.90 km) |
| San Mateo to Uvalde (Texas) | 1,417.18 mi (2,280.73 km) |
| San Mateo to Vacaville (California) | 58.80 mi (94.64 km) |
| San Mateo to Vadnais Heights (Minnesota) | 1,593.37 mi (2,564.27 km) |
| San Mateo to Vail (Arizona) | 761.16 mi (1,224.96 km) |
| San Mateo to Valdosta (Georgia) | 2,261.35 mi (3,639.30 km) |
