| Placentia to University Place (Washington) | 953.17 mi (1,533.98 km) |
| Placentia to Upland (California) | 19.82 mi (31.90 km) |
| Placentia to Upper Arlington (Ohio) | 1,953.91 mi (3,144.52 km) |
| Placentia to Upper Grand Lagoon (Florida) | 1,890.90 mi (3,043.11 km) |
| Placentia to Upper Montclair (New Jersey) | 2,419.46 mi (3,893.75 km) |
| Placentia to Urbana (Illinois) | 1,683.67 mi (2,709.60 km) |
| Placentia to Urbana (Maryland) | 2,259.25 mi (3,635.90 km) |
| Placentia to Urbana (Ohio) | 1,917.94 mi (3,086.63 km) |
| Placentia to Urbandale (Iowa) | 1,414.07 mi (2,275.73 km) |
| Placentia to Utica (New York) | 2,364.26 mi (3,804.90 km) |
| Placentia to Uvalde (Texas) | 1,110.38 mi (1,786.99 km) |
| Placentia to Vacaville (California) | 385.13 mi (619.80 km) |
| Placentia to Vadnais Heights (Minnesota) | 1,521.63 mi (2,448.82 km) |
| Placentia to Vail (Arizona) | 434.52 mi (699.29 km) |
| Placentia to Valdosta (Georgia) | 2,019.24 mi (3,249.65 km) |
