| Ottawa to Parma Heights (Ohio) | 366.10 mi (589.17 km) |
| Ottawa to Parole (Maryland) | 667.75 mi (1,074.63 km) |
| Ottawa to Parsippany (New Jersey) | 750.20 mi (1,207.33 km) |
| Ottawa to Pasadena (California) | 1,667.47 mi (2,683.53 km) |
| Ottawa to Pasadena (Maryland) | 664.12 mi (1,068.79 km) |
| Ottawa to Pasadena (Texas) | 882.40 mi (1,420.08 km) |
| Ottawa to Pasadena Hills (Florida) | 976.36 mi (1,571.30 km) |
| Ottawa to Pascagoula (Mississippi) | 759.41 mi (1,222.16 km) |
| Ottawa to Pasco (Washington) | 1,538.52 mi (2,476.01 km) |
| Ottawa to Passaic (New Jersey) | 765.04 mi (1,231.22 km) |
| Ottawa to Pataskala (Ohio) | 333.29 mi (536.37 km) |
| Ottawa to Patchogue (New York) | 823.44 mi (1,325.19 km) |
| Ottawa to Paterson (New Jersey) | 762.77 mi (1,227.56 km) |
| Ottawa to Patterson (California) | 1,736.03 mi (2,793.87 km) |
| Ottawa to Pawtucket (Rhode Island) | 900.65 mi (1,449.45 km) |
