| Ridgecrest to Olympia (Washington) | 833.36 mi (1,341.16 km) |
| Ridgecrest to Olympia Heights (Florida) | 2,305.57 mi (3,710.46 km) |
| Ridgecrest to Omaha (Nebraska) | 1,228.53 mi (1,977.13 km) |
| Ridgecrest to On Top of the World Designated Place (Florida) | 2,101.25 mi (3,381.63 km) |
| Ridgecrest to Onalaska (Wisconsin) | 1,508.27 mi (2,427.33 km) |
| Ridgecrest to Oneida (New York) | 2,277.14 mi (3,664.70 km) |
| Ridgecrest to Oneonta (New York) | 2,308.86 mi (3,715.75 km) |
| Ridgecrest to Ontario (California) | 110.01 mi (177.04 km) |
| Ridgecrest to Ontario (Oregon) | 581.18 mi (935.32 km) |
| Ridgecrest to Opa-locka (Florida) | 2,304.87 mi (3,709.34 km) |
| Ridgecrest to Opelika (Alabama) | 1,849.21 mi (2,976.02 km) |
| Ridgecrest to Opelousas (Louisiana) | 1,517.73 mi (2,442.55 km) |
| Ridgecrest to Orange (California) | 126.56 mi (203.68 km) |
| Ridgecrest to Orange (Texas) | 1,434.15 mi (2,308.04 km) |
| Ridgecrest to Orange City (Florida) | 2,161.66 mi (3,478.85 km) |
