| Prestwick to Oswego (Illinois) | 3,699.16 mi (5,953.22 km) |
| Prestwick to Oswego (New York) | 3,178.56 mi (5,115.40 km) |
| Prestwick to Otsego (Minnesota) | 3,708.75 mi (5,968.66 km) |
| Prestwick to Ottawa (Illinois) | 3,733.03 mi (6,007.74 km) |
| Prestwick to Ottawa (Kansas) | 4,103.84 mi (6,604.50 km) |
| Prestwick to Ottumwa (Iowa) | 3,878.58 mi (6,241.97 km) |
| Prestwick to Overland (Missouri) | 3,922.71 mi (6,312.99 km) |
| Prestwick to Overland Park (Kansas) | 4,068.42 mi (6,547.49 km) |
| Prestwick to Overlea (Maryland) | 3,371.64 mi (5,426.13 km) |
| Prestwick to Oviedo (Florida) | 4,096.79 mi (6,593.15 km) |
| Prestwick to Owasso (Oklahoma) | 4,245.32 mi (6,832.18 km) |
| Prestwick to Owatonna (Minnesota) | 3,753.34 mi (6,040.42 km) |
| Prestwick to Owensboro (Kentucky) | 3,850.84 mi (6,197.33 km) |
| Prestwick to Owings Mills (Maryland) | 3,379.82 mi (5,439.30 km) |
| Prestwick to Owosso (Michigan) | 3,484.27 mi (5,607.40 km) |
