| Ottawa to Pittsburg (Kansas) | 415.21 mi (668.22 km) |
| Ottawa to Pittsburgh (Pennsylvania) | 466.29 mi (750.43 km) |
| Ottawa to Pittsfield (Massachusetts) | 802.88 mi (1,292.11 km) |
| Ottawa to Placentia (California) | 1,661.45 mi (2,673.85 km) |
| Ottawa to Placerville (California) | 1,691.20 mi (2,721.73 km) |
| Ottawa to Plainfield (Illinois) | 36.09 mi (58.09 km) |
| Ottawa to Plainfield (Indiana) | 172.54 mi (277.67 km) |
| Ottawa to Plainfield (New Jersey) | 752.47 mi (1,210.98 km) |
| Ottawa to Plainview (New York) | 799.67 mi (1,286.95 km) |
| Ottawa to Plainview (Texas) | 859.41 mi (1,383.09 km) |
| Ottawa to Plano (Illinois) | 26.93 mi (43.34 km) |
| Ottawa to Plano (Texas) | 719.98 mi (1,158.69 km) |
| Ottawa to Plant City (Florida) | 996.61 mi (1,603.89 km) |
| Ottawa to Plantation (Florida) | 1,160.13 mi (1,867.05 km) |
| Ottawa to Platteville (Wisconsin) | 126.85 mi (204.14 km) |
