| El Dorado Hills to Olympia Heights (Florida) | 2,518.50 mi (4,053.13 km) |
| El Dorado Hills to Omaha (Nebraska) | 1,330.95 mi (2,141.95 km) |
| El Dorado Hills to On Top of the World Designated Place (Florida) | 2,300.51 mi (3,702.32 km) |
| El Dorado Hills to Onalaska (Wisconsin) | 1,581.48 mi (2,545.15 km) |
| El Dorado Hills to Oneida (New York) | 2,361.48 mi (3,800.44 km) |
| El Dorado Hills to Oneonta (New York) | 2,398.04 mi (3,859.26 km) |
| El Dorado Hills to Ontario (California) | 373.13 mi (600.50 km) |
| El Dorado Hills to Ontario (Oregon) | 425.67 mi (685.06 km) |
| El Dorado Hills to Opa-locka (Florida) | 2,516.73 mi (4,050.29 km) |
| El Dorado Hills to Opelika (Alabama) | 2,031.66 mi (3,269.64 km) |
| El Dorado Hills to Opelousas (Louisiana) | 1,732.38 mi (2,788.00 km) |
| El Dorado Hills to Orange (California) | 381.53 mi (614.02 km) |
| El Dorado Hills to Orange (Texas) | 1,656.44 mi (2,665.79 km) |
| El Dorado Hills to Orange City (Florida) | 2,359.59 mi (3,797.39 km) |
| El Dorado Hills to Orangeburg (South Carolina) | 2,253.86 mi (3,627.23 km) |
