| Acerra to Olympia Heights (Florida) | 5,305.15 mi (8,537.82 km) |
| Acerra to Omaha (Nebraska) | 5,282.71 mi (8,501.70 km) |
| Acerra to On Top of the World Designated Place (Florida) | 5,249.37 mi (8,448.04 km) |
| Acerra to Onalaska (Wisconsin) | 4,978.05 mi (8,011.40 km) |
| Acerra to Oneida (New York) | 4,382.34 mi (7,052.70 km) |
| Acerra to Oneonta (New York) | 4,379.83 mi (7,048.65 km) |
| Acerra to Ontario (California) | 6,423.16 mi (10,337.08 km) |
| Acerra to Ontario (Oregon) | 5,834.74 mi (9,390.10 km) |
| Acerra to Opa-locka (Florida) | 5,293.43 mi (8,518.96 km) |
| Acerra to Opelika (Alabama) | 5,234.08 mi (8,423.44 km) |
| Acerra to Opelousas (Louisiana) | 5,627.66 mi (9,056.84 km) |
| Acerra to Orange (California) | 6,443.56 mi (10,369.90 km) |
| Acerra to Orange (Texas) | 5,719.63 mi (9,204.86 km) |
| Acerra to Orange City (Florida) | 5,210.08 mi (8,384.82 km) |
| Acerra to Orangeburg (South Carolina) | 4,994.69 mi (8,038.18 km) |
