| Southwick to Oswego (Illinois) | 4,001.12 mi (6,439.19 km) |
| Southwick to Oswego (New York) | 3,458.13 mi (5,565.32 km) |
| Southwick to Otsego (Minnesota) | 4,032.32 mi (6,489.38 km) |
| Southwick to Ottawa (Illinois) | 4,035.08 mi (6,493.83 km) |
| Southwick to Ottawa (Kansas) | 4,412.65 mi (7,101.47 km) |
| Southwick to Ottumwa (Iowa) | 4,187.77 mi (6,739.56 km) |
| Southwick to Overland (Missouri) | 4,220.06 mi (6,791.53 km) |
| Southwick to Overland Park (Kansas) | 4,376.68 mi (7,043.59 km) |
| Southwick to Overlea (Maryland) | 3,633.31 mi (5,847.25 km) |
| Southwick to Oviedo (Florida) | 4,330.47 mi (6,969.22 km) |
| Southwick to Owasso (Oklahoma) | 4,549.16 mi (7,321.16 km) |
| Southwick to Owatonna (Minnesota) | 4,072.95 mi (6,554.78 km) |
| Southwick to Owensboro (Kentucky) | 4,136.68 mi (6,657.35 km) |
| Southwick to Owings Mills (Maryland) | 3,642.52 mi (5,862.08 km) |
| Southwick to Owosso (Michigan) | 3,781.02 mi (6,084.96 km) |
