| Erd to Olympia Heights (Florida) | 5,335.38 mi (8,586.47 km) |
| Erd to Omaha (Nebraska) | 5,134.53 mi (8,263.23 km) |
| Erd to On Top of the World Designated Place (Florida) | 5,246.99 mi (8,444.22 km) |
| Erd to Onalaska (Wisconsin) | 4,835.87 mi (7,782.58 km) |
| Erd to Oneida (New York) | 4,312.60 mi (6,940.46 km) |
| Erd to Oneonta (New York) | 4,317.43 mi (6,948.23 km) |
| Erd to Ontario (California) | 6,199.88 mi (9,977.74 km) |
| Erd to Ontario (Oregon) | 5,575.20 mi (8,972.42 km) |
| Erd to Opa-locka (Florida) | 5,322.98 mi (8,566.50 km) |
| Erd to Opelika (Alabama) | 5,192.26 mi (8,356.14 km) |
| Erd to Opelousas (Louisiana) | 5,563.51 mi (8,953.60 km) |
| Erd to Orange (California) | 6,220.02 mi (10,010.16 km) |
| Erd to Orange (Texas) | 5,648.67 mi (9,090.66 km) |
| Erd to Orange City (Florida) | 5,214.16 mi (8,391.38 km) |
| Erd to Orangeburg (South Carolina) | 4,970.43 mi (7,999.13 km) |
