| Parlier to Olympia (Washington) | 741.04 mi (1,192.58 km) |
| Parlier to Olympia Heights (Florida) | 2,417.81 mi (3,891.09 km) |
| Parlier to Omaha (Nebraska) | 1,298.37 mi (2,089.53 km) |
| Parlier to On Top of the World Designated Place (Florida) | 2,209.02 mi (3,555.07 km) |
| Parlier to Onalaska (Wisconsin) | 1,567.56 mi (2,522.75 km) |
| Parlier to Oneida (New York) | 2,342.95 mi (3,770.62 km) |
| Parlier to Oneonta (New York) | 2,376.64 mi (3,824.84 km) |
| Parlier to Ontario (California) | 208.41 mi (335.40 km) |
| Parlier to Ontario (Oregon) | 529.95 mi (852.87 km) |
| Parlier to Opa-locka (Florida) | 2,416.78 mi (3,889.44 km) |
| Parlier to Opelika (Alabama) | 1,951.05 mi (3,139.90 km) |
| Parlier to Opelousas (Louisiana) | 1,629.72 mi (2,622.78 km) |
| Parlier to Orange (California) | 216.79 mi (348.90 km) |
| Parlier to Orange (Texas) | 1,548.38 mi (2,491.88 km) |
| Parlier to Orange City (Florida) | 2,269.05 mi (3,651.69 km) |
