| Clovis to Olympia Heights (Florida) | 2,427.30 mi (3,906.37 km) |
| Clovis to Omaha (Nebraska) | 1,300.10 mi (2,092.31 km) |
| Clovis to On Top of the World Designated Place (Florida) | 2,217.47 mi (3,568.67 km) |
| Clovis to Onalaska (Wisconsin) | 1,567.50 mi (2,522.65 km) |
| Clovis to Oneida (New York) | 2,343.65 mi (3,771.74 km) |
| Clovis to Oneonta (New York) | 2,377.65 mi (3,826.46 km) |
| Clovis to Ontario (California) | 225.34 mi (362.66 km) |
| Clovis to Ontario (Oregon) | 517.24 mi (832.41 km) |
| Clovis to Opa-locka (Florida) | 2,426.20 mi (3,904.59 km) |
| Clovis to Opelika (Alabama) | 1,958.25 mi (3,151.49 km) |
| Clovis to Opelousas (Louisiana) | 1,639.26 mi (2,638.13 km) |
| Clovis to Orange (California) | 233.79 mi (376.25 km) |
| Clovis to Orange (Texas) | 1,558.50 mi (2,508.17 km) |
| Clovis to Orange City (Florida) | 2,277.41 mi (3,665.14 km) |
| Clovis to Orangeburg (South Carolina) | 2,189.65 mi (3,523.90 km) |
