| San Lorenzo de El Escorial to Oakley (California) | 5,727.32 mi (9,217.22 km) |
| San Lorenzo de El Escorial to Oakton (Virginia) | 3,770.23 mi (6,067.60 km) |
| San Lorenzo de El Escorial to Oakville (Missouri) | 4,396.03 mi (7,074.73 km) |
| San Lorenzo de El Escorial to Oatfield (Oregon) | 5,383.04 mi (8,663.16 km) |
| San Lorenzo de El Escorial to Ocala (Florida) | 4,348.50 mi (6,998.23 km) |
| San Lorenzo de El Escorial to Ocean Acres (New Jersey) | 3,599.22 mi (5,792.39 km) |
| San Lorenzo de El Escorial to Ocean City (New Jersey) | 3,628.77 mi (5,839.94 km) |
| San Lorenzo de El Escorial to Ocean Pines (Maryland) | 3,681.97 mi (5,925.56 km) |
| San Lorenzo de El Escorial to Ocean Pointe (Hawaii) | 7,841.77 mi (12,620.12 km) |
| San Lorenzo de El Escorial to Ocean Springs (Mississippi) | 4,630.29 mi (7,451.74 km) |
| San Lorenzo de El Escorial to Oceanside (California) | 5,795.42 mi (9,326.83 km) |
| San Lorenzo de El Escorial to Oceanside (New York) | 3,542.64 mi (5,701.32 km) |
| San Lorenzo de El Escorial to Ocoee (Florida) | 4,340.17 mi (6,984.83 km) |
| San Lorenzo de El Escorial to Oconomowoc (Wisconsin) | 4,149.43 mi (6,677.85 km) |
| San Lorenzo de El Escorial to Odenton (Maryland) | 3,735.56 mi (6,011.80 km) |
