| Sanlucar la Mayor to Oswego (Illinois) | 4,214.10 mi (6,781.95 km) |
| Sanlucar la Mayor to Oswego (New York) | 3,611.20 mi (5,811.67 km) |
| Sanlucar la Mayor to Otsego (Minnesota) | 4,341.83 mi (6,987.50 km) |
| Sanlucar la Mayor to Ottawa (Illinois) | 4,246.77 mi (6,834.52 km) |
| Sanlucar la Mayor to Ottawa (Kansas) | 4,637.00 mi (7,462.53 km) |
| Sanlucar la Mayor to Ottumwa (Iowa) | 4,423.54 mi (7,119.00 km) |
| Sanlucar la Mayor to Overland (Missouri) | 4,403.38 mi (7,086.55 km) |
| Sanlucar la Mayor to Overland Park (Kansas) | 4,600.16 mi (7,403.24 km) |
| Sanlucar la Mayor to Overlea (Maryland) | 3,710.44 mi (5,971.37 km) |
| Sanlucar la Mayor to Oviedo (Florida) | 4,273.40 mi (6,877.37 km) |
| Sanlucar la Mayor to Owasso (Oklahoma) | 4,745.84 mi (7,637.70 km) |
| Sanlucar la Mayor to Owatonna (Minnesota) | 4,361.68 mi (7,019.44 km) |
| Sanlucar la Mayor to Owensboro (Kentucky) | 4,277.22 mi (6,883.51 km) |
| Sanlucar la Mayor to Owings Mills (Maryland) | 3,722.79 mi (5,991.25 km) |
| Sanlucar la Mayor to Owosso (Michigan) | 3,983.16 mi (6,410.27 km) |
