| Argentan to Olympia Heights (Florida) | 4,475.39 mi (7,202.45 km) |
| Argentan to Omaha (Nebraska) | 4,398.41 mi (7,078.56 km) |
| Argentan to On Top of the World Designated Place (Florida) | 4,400.62 mi (7,082.11 km) |
| Argentan to Onalaska (Wisconsin) | 4,093.63 mi (6,588.06 km) |
| Argentan to Oneida (New York) | 3,505.54 mi (5,641.62 km) |
| Argentan to Oneonta (New York) | 3,504.98 mi (5,640.72 km) |
| Argentan to Ontario (California) | 5,551.07 mi (8,933.58 km) |
| Argentan to Ontario (Oregon) | 4,980.85 mi (8,015.90 km) |
| Argentan to Opa-locka (Florida) | 4,463.21 mi (7,182.85 km) |
| Argentan to Opelika (Alabama) | 4,367.70 mi (7,029.13 km) |
| Argentan to Opelousas (Louisiana) | 4,754.54 mi (7,651.69 km) |
| Argentan to Orange (California) | 5,571.49 mi (8,966.45 km) |
| Argentan to Orange (Texas) | 4,844.74 mi (7,796.85 km) |
| Argentan to Orange City (Florida) | 4,364.67 mi (7,024.27 km) |
| Argentan to Orangeburg (South Carolina) | 4,134.92 mi (6,654.52 km) |
