| Sanlucar de Barrameda to Oswego (Illinois) | 4,229.90 mi (6,807.37 km) |
| Sanlucar de Barrameda to Oswego (New York) | 3,625.62 mi (5,834.87 km) |
| Sanlucar de Barrameda to Otsego (Minnesota) | 4,361.46 mi (7,019.09 km) |
| Sanlucar de Barrameda to Ottawa (Illinois) | 4,262.46 mi (6,859.77 km) |
| Sanlucar de Barrameda to Ottawa (Kansas) | 4,652.60 mi (7,487.64 km) |
| Sanlucar de Barrameda to Ottumwa (Iowa) | 4,439.96 mi (7,145.43 km) |
| Sanlucar de Barrameda to Overland (Missouri) | 4,417.60 mi (7,109.43 km) |
| Sanlucar de Barrameda to Overland Park (Kansas) | 4,615.77 mi (7,428.37 km) |
| Sanlucar de Barrameda to Overlea (Maryland) | 3,721.38 mi (5,988.98 km) |
| Sanlucar de Barrameda to Oviedo (Florida) | 4,277.28 mi (6,883.62 km) |
| Sanlucar de Barrameda to Owasso (Oklahoma) | 4,760.09 mi (7,660.63 km) |
| Sanlucar de Barrameda to Owatonna (Minnesota) | 4,380.42 mi (7,049.60 km) |
| Sanlucar de Barrameda to Owensboro (Kentucky) | 4,289.81 mi (6,903.79 km) |
| Sanlucar de Barrameda to Owings Mills (Maryland) | 3,733.84 mi (6,009.03 km) |
| Sanlucar de Barrameda to Owosso (Michigan) | 3,998.91 mi (6,435.62 km) |
