| La Carolina to Olympia Heights (Florida) | 4,453.22 mi (7,166.76 km) |
| La Carolina to Omaha (Nebraska) | 4,660.88 mi (7,500.96 km) |
| La Carolina to On Top of the World Designated Place (Florida) | 4,432.30 mi (7,133.10 km) |
| La Carolina to Onalaska (Wisconsin) | 4,356.68 mi (7,011.40 km) |
| La Carolina to Oneida (New York) | 3,672.07 mi (5,909.62 km) |
| La Carolina to Oneonta (New York) | 3,659.35 mi (5,889.15 km) |
| La Carolina to Ontario (California) | 5,892.80 mi (9,483.55 km) |
| La Carolina to Ontario (Oregon) | 5,394.65 mi (8,681.85 km) |
| La Carolina to Opa-locka (Florida) | 4,442.36 mi (7,149.29 km) |
| La Carolina to Opelika (Alabama) | 4,463.32 mi (7,183.01 km) |
| La Carolina to Opelousas (Louisiana) | 4,875.80 mi (7,846.84 km) |
| La Carolina to Orange (California) | 5,912.99 mi (9,516.04 km) |
| La Carolina to Orange (Texas) | 4,974.37 mi (8,005.47 km) |
| La Carolina to Orange City (Florida) | 4,386.75 mi (7,059.78 km) |
| La Carolina to Orangeburg (South Carolina) | 4,208.11 mi (6,772.29 km) |
