| Scalea to Olympia Heights (Florida) | 5,405.38 mi (8,699.13 km) |
| Scalea to Omaha (Nebraska) | 5,391.37 mi (8,676.57 km) |
| Scalea to On Top of the World Designated Place (Florida) | 5,352.18 mi (8,613.50 km) |
| Scalea to Onalaska (Wisconsin) | 5,086.68 mi (8,186.22 km) |
| Scalea to Oneida (New York) | 4,489.32 mi (7,224.86 km) |
| Scalea to Oneonta (New York) | 4,486.50 mi (7,220.33 km) |
| Scalea to Ontario (California) | 6,531.22 mi (10,510.99 km) |
| Scalea to Ontario (Oregon) | 5,941.26 mi (9,561.54 km) |
| Scalea to Opa-locka (Florida) | 5,393.73 mi (8,680.37 km) |
| Scalea to Opelika (Alabama) | 5,339.38 mi (8,592.90 km) |
| Scalea to Opelousas (Louisiana) | 5,733.91 mi (9,227.84 km) |
| Scalea to Orange (California) | 6,551.62 mi (10,543.81 km) |
| Scalea to Orange (Texas) | 5,826.16 mi (9,376.30 km) |
| Scalea to Orange City (Florida) | 5,312.45 mi (8,549.56 km) |
| Scalea to Orangeburg (South Carolina) | 5,099.10 mi (8,206.21 km) |
