| Merignac to Olympia Heights (Florida) | 4,501.10 mi (7,243.82 km) |
| Merignac to Omaha (Nebraska) | 4,525.22 mi (7,282.64 km) |
| Merignac to On Top of the World Designated Place (Florida) | 4,445.46 mi (7,154.28 km) |
| Merignac to Onalaska (Wisconsin) | 4,219.29 mi (6,790.30 km) |
| Merignac to Oneida (New York) | 3,593.81 mi (5,783.68 km) |
| Merignac to Oneonta (New York) | 3,588.89 mi (5,775.76 km) |
| Merignac to Ontario (California) | 5,709.20 mi (9,188.06 km) |
| Merignac to Ontario (Oregon) | 5,161.24 mi (8,306.22 km) |
| Merignac to Opa-locka (Florida) | 4,489.34 mi (7,224.89 km) |
| Merignac to Opelika (Alabama) | 4,435.38 mi (7,138.05 km) |
| Merignac to Opelousas (Louisiana) | 4,833.20 mi (7,778.29 km) |
| Merignac to Orange (California) | 5,729.61 mi (9,220.91 km) |
| Merignac to Orange (Texas) | 4,926.78 mi (7,928.89 km) |
| Merignac to Orange City (Florida) | 4,405.86 mi (7,090.55 km) |
| Merignac to Orangeburg (South Carolina) | 4,193.35 mi (6,748.54 km) |
