| Parthenay to Olympia Heights (Florida) | 4,493.65 mi (7,231.83 km) |
| Parthenay to Omaha (Nebraska) | 4,470.29 mi (7,194.23 km) |
| Parthenay to On Top of the World Designated Place (Florida) | 4,429.02 mi (7,127.83 km) |
| Parthenay to Onalaska (Wisconsin) | 4,164.72 mi (6,702.47 km) |
| Parthenay to Oneida (New York) | 3,556.37 mi (5,723.42 km) |
| Parthenay to Oneonta (New York) | 3,553.49 mi (5,718.79 km) |
| Parthenay to Ontario (California) | 5,639.91 mi (9,076.56 km) |
| Parthenay to Ontario (Oregon) | 5,081.07 mi (8,177.19 km) |
| Parthenay to Opa-locka (Florida) | 4,481.68 mi (7,212.57 km) |
| Parthenay to Opelika (Alabama) | 4,408.23 mi (7,094.36 km) |
| Parthenay to Opelousas (Louisiana) | 4,801.16 mi (7,726.71 km) |
| Parthenay to Orange (California) | 5,660.34 mi (9,109.43 km) |
| Parthenay to Orange (Texas) | 4,893.20 mi (7,874.84 km) |
| Parthenay to Orange City (Florida) | 4,391.11 mi (7,066.81 km) |
| Parthenay to Orangeburg (South Carolina) | 4,170.37 mi (6,711.56 km) |
