| Vallet to Olympia Heights (Florida) | 4,439.47 mi (7,144.64 km) |
| Vallet to Omaha (Nebraska) | 4,410.56 mi (7,098.10 km) |
| Vallet to On Top of the World Designated Place (Florida) | 4,373.18 mi (7,037.96 km) |
| Vallet to Onalaska (Wisconsin) | 4,105.00 mi (6,606.36 km) |
| Vallet to Oneida (New York) | 3,497.76 mi (5,629.11 km) |
| Vallet to Oneonta (New York) | 3,495.10 mi (5,624.81 km) |
| Vallet to Ontario (California) | 5,580.37 mi (8,980.73 km) |
| Vallet to Ontario (Oregon) | 5,022.43 mi (8,082.81 km) |
| Vallet to Opa-locka (Florida) | 4,427.47 mi (7,125.32 km) |
| Vallet to Opelika (Alabama) | 4,350.76 mi (7,001.87 km) |
| Vallet to Opelousas (Louisiana) | 4,743.04 mi (7,633.18 km) |
| Vallet to Orange (California) | 5,600.79 mi (9,013.60 km) |
| Vallet to Orange (Texas) | 4,834.90 mi (7,781.03 km) |
| Vallet to Orange City (Florida) | 4,335.57 mi (6,977.42 km) |
| Vallet to Orangeburg (South Carolina) | 4,113.51 mi (6,620.05 km) |
