| Aljustrel to Olympia Heights (Florida) | 4,216.93 mi (6,786.49 km) |
| Aljustrel to Omaha (Nebraska) | 4,471.23 mi (7,195.75 km) |
| Aljustrel to On Top of the World Designated Place (Florida) | 4,202.41 mi (6,763.13 km) |
| Aljustrel to Onalaska (Wisconsin) | 4,168.86 mi (6,709.13 km) |
| Aljustrel to Oneida (New York) | 3,467.70 mi (5,580.72 km) |
| Aljustrel to Oneonta (New York) | 3,452.69 mi (5,556.57 km) |
| Aljustrel to Ontario (California) | 5,716.62 mi (9,200.02 km) |
| Aljustrel to Ontario (Oregon) | 5,241.84 mi (8,435.93 km) |
| Aljustrel to Opa-locka (Florida) | 4,206.24 mi (6,769.29 km) |
| Aljustrel to Opelika (Alabama) | 4,242.45 mi (6,827.57 km) |
| Aljustrel to Opelousas (Louisiana) | 4,657.47 mi (7,495.47 km) |
| Aljustrel to Orange (California) | 5,736.65 mi (9,232.25 km) |
| Aljustrel to Orange (Texas) | 4,757.05 mi (7,655.73 km) |
| Aljustrel to Orange City (Florida) | 4,155.77 mi (6,688.07 km) |
| Aljustrel to Orangeburg (South Carolina) | 3,984.82 mi (6,412.94 km) |
