| Ontario to Plattsburgh (New York) | 2,437.49 mi (3,922.75 km) |
| Ontario to Pleasant Grove (Utah) | 543.40 mi (874.51 km) |
| Ontario to Pleasant Hill (California) | 368.11 mi (592.41 km) |
| Ontario to Pleasant Hill (Iowa) | 1,409.72 mi (2,268.73 km) |
| Ontario to Pleasant Prairie (Wisconsin) | 1,704.46 mi (2,743.07 km) |
| Ontario to Pleasant View (Utah) | 589.03 mi (947.96 km) |
| Ontario to Pleasanton (California) | 346.46 mi (557.57 km) |
| Ontario to Pleasanton (Texas) | 1,177.05 mi (1,894.27 km) |
| Ontario to Pleasantville (New Jersey) | 2,392.18 mi (3,849.85 km) |
| Ontario to Plover (Wisconsin) | 1,654.37 mi (2,662.45 km) |
| Ontario to Plum (Pennsylvania) | 2,111.94 mi (3,398.84 km) |
| Ontario to Plymouth (Indiana) | 1,772.69 mi (2,852.87 km) |
| Ontario to Plymouth (Minnesota) | 1,485.24 mi (2,390.27 km) |
| Ontario to Pocatello (Idaho) | 670.38 mi (1,078.87 km) |
| Ontario to Poinciana (Florida) | 2,164.88 mi (3,484.04 km) |
