| Cide to Olympia Heights (Florida) | 6,123.02 mi (9,854.04 km) |
| Cide to Omaha (Nebraska) | 5,870.38 mi (9,447.46 km) |
| Cide to On Top of the World Designated Place (Florida) | 6,032.51 mi (9,708.39 km) |
| Cide to Onalaska (Wisconsin) | 5,577.18 mi (8,975.61 km) |
| Cide to Oneida (New York) | 5,086.61 mi (8,186.10 km) |
| Cide to Oneonta (New York) | 5,093.44 mi (8,197.10 km) |
| Cide to Ontario (California) | 6,869.36 mi (11,055.17 km) |
| Cide to Ontario (Oregon) | 6,215.95 mi (10,003.60 km) |
| Cide to Opa-locka (Florida) | 6,110.60 mi (9,834.06 km) |
| Cide to Opelika (Alabama) | 5,970.96 mi (9,609.33 km) |
| Cide to Opelousas (Louisiana) | 6,334.93 mi (10,195.08 km) |
| Cide to Orange (California) | 6,889.04 mi (11,086.84 km) |
| Cide to Orange (Texas) | 6,417.52 mi (10,328.01 km) |
| Cide to Orange City (Florida) | 6,000.39 mi (9,656.69 km) |
| Cide to Orangeburg (South Carolina) | 5,753.18 mi (9,258.84 km) |
