| Calne to Oswego (Illinois) | 3,914.01 mi (6,298.99 km) |
| Calne to Oswego (New York) | 3,371.50 mi (5,425.91 km) |
| Calne to Otsego (Minnesota) | 3,945.55 mi (6,349.75 km) |
| Calne to Ottawa (Illinois) | 3,947.96 mi (6,353.63 km) |
| Calne to Ottawa (Kansas) | 4,325.52 mi (6,961.26 km) |
| Calne to Ottumwa (Iowa) | 4,100.65 mi (6,599.36 km) |
| Calne to Overland (Missouri) | 4,133.00 mi (6,651.42 km) |
| Calne to Overland Park (Kansas) | 4,289.56 mi (6,903.38 km) |
| Calne to Overlea (Maryland) | 3,547.59 mi (5,709.29 km) |
| Calne to Oviedo (Florida) | 4,246.96 mi (6,834.82 km) |
| Calne to Owasso (Oklahoma) | 4,462.04 mi (7,180.95 km) |
| Calne to Owatonna (Minnesota) | 3,986.04 mi (6,414.90 km) |
| Calne to Owensboro (Kentucky) | 4,049.90 mi (6,517.69 km) |
| Calne to Owings Mills (Maryland) | 3,556.74 mi (5,724.02 km) |
| Calne to Owosso (Michigan) | 3,693.95 mi (5,944.84 km) |
