| Derry to Oswego (Illinois) | 3,612.46 mi (5,813.70 km) |
| Derry to Oswego (New York) | 3,084.63 mi (4,964.23 km) |
| Derry to Otsego (Minnesota) | 3,630.90 mi (5,843.36 km) |
| Derry to Ottawa (Illinois) | 3,646.38 mi (5,868.29 km) |
| Derry to Ottawa (Kansas) | 4,019.84 mi (6,469.31 km) |
| Derry to Ottumwa (Iowa) | 3,794.63 mi (6,106.87 km) |
| Derry to Overland (Missouri) | 3,834.54 mi (6,171.10 km) |
| Derry to Overland Park (Kansas) | 3,984.20 mi (6,411.94 km) |
| Derry to Overlea (Maryland) | 3,273.43 mi (5,268.08 km) |
| Derry to Oviedo (Florida) | 3,993.60 mi (6,427.08 km) |
| Derry to Owasso (Oklahoma) | 4,159.53 mi (6,694.11 km) |
| Derry to Owatonna (Minnesota) | 3,673.68 mi (5,912.21 km) |
| Derry to Owensboro (Kentucky) | 3,759.06 mi (6,049.62 km) |
| Derry to Owings Mills (Maryland) | 3,281.85 mi (5,281.62 km) |
| Derry to Owosso (Michigan) | 3,395.68 mi (5,464.82 km) |
