| Seaford to Oswego (Illinois) | 4,016.32 mi (6,463.64 km) |
| Seaford to Oswego (New York) | 3,473.53 mi (5,590.11 km) |
| Seaford to Otsego (Minnesota) | 4,047.10 mi (6,513.18 km) |
| Seaford to Ottawa (Illinois) | 4,050.27 mi (6,518.28 km) |
| Seaford to Ottawa (Kansas) | 4,427.75 mi (7,125.77 km) |
| Seaford to Ottumwa (Iowa) | 4,202.85 mi (6,763.84 km) |
| Seaford to Overland (Missouri) | 4,235.32 mi (6,816.09 km) |
| Seaford to Overland Park (Kansas) | 4,391.79 mi (7,067.91 km) |
| Seaford to Overlea (Maryland) | 3,648.79 mi (5,872.16 km) |
| Seaford to Oviedo (Florida) | 4,345.92 mi (6,994.08 km) |
| Seaford to Owasso (Oklahoma) | 4,564.34 mi (7,345.59 km) |
| Seaford to Owatonna (Minnesota) | 4,087.83 mi (6,578.73 km) |
| Seaford to Owensboro (Kentucky) | 4,152.05 mi (6,682.08 km) |
| Seaford to Owings Mills (Maryland) | 3,658.00 mi (5,886.98 km) |
| Seaford to Owosso (Michigan) | 3,796.27 mi (6,109.50 km) |
