| Sanlucar de Barrameda to Orangevale (California) | 5,777.41 mi (9,297.84 km) |
| Sanlucar de Barrameda to Orchards (Washington) | 5,496.25 mi (8,845.36 km) |
| Sanlucar de Barrameda to Orcutt (California) | 5,924.74 mi (9,534.94 km) |
| Sanlucar de Barrameda to Oregon (Ohio) | 3,999.48 mi (6,436.53 km) |
| Sanlucar de Barrameda to Oregon (Wisconsin) | 4,242.14 mi (6,827.07 km) |
| Sanlucar de Barrameda to Oregon City (Oregon) | 5,514.81 mi (8,875.24 km) |
| Sanlucar de Barrameda to Orem (Utah) | 5,318.37 mi (8,559.09 km) |
| Sanlucar de Barrameda to Orinda (California) | 5,853.48 mi (9,420.27 km) |
| Sanlucar de Barrameda to Orland Park (Illinois) | 4,209.90 mi (6,775.18 km) |
| Sanlucar de Barrameda to Orlando (Florida) | 4,291.27 mi (6,906.13 km) |
| Sanlucar de Barrameda to Ormond Beach (Florida) | 4,251.53 mi (6,842.18 km) |
| Sanlucar de Barrameda to Oro Valley (Arizona) | 5,621.74 mi (9,047.32 km) |
| Sanlucar de Barrameda to Oroville (California) | 5,752.53 mi (9,257.80 km) |
| Sanlucar de Barrameda to Oshkosh (Wisconsin) | 4,172.87 mi (6,715.59 km) |
| Sanlucar de Barrameda to Oskaloosa (Iowa) | 4,441.51 mi (7,147.92 km) |
