| Caserta to Olympia Heights (Florida) | 5,300.43 mi (8,530.22 km) |
| Caserta to Omaha (Nebraska) | 5,275.89 mi (8,490.73 km) |
| Caserta to On Top of the World Designated Place (Florida) | 5,244.21 mi (8,439.73 km) |
| Caserta to Onalaska (Wisconsin) | 4,971.27 mi (8,000.49 km) |
| Caserta to Oneida (New York) | 4,376.27 mi (7,042.93 km) |
| Caserta to Oneonta (New York) | 4,373.84 mi (7,039.01 km) |
| Caserta to Ontario (California) | 6,415.74 mi (10,325.13 km) |
| Caserta to Ontario (Oregon) | 5,827.02 mi (9,377.68 km) |
| Caserta to Opa-locka (Florida) | 5,288.70 mi (8,511.34 km) |
| Caserta to Opelika (Alabama) | 5,228.43 mi (8,414.34 km) |
| Caserta to Opelousas (Louisiana) | 5,621.77 mi (9,047.37 km) |
| Caserta to Orange (California) | 6,436.14 mi (10,357.96 km) |
| Caserta to Orange (Texas) | 5,713.68 mi (9,195.28 km) |
| Caserta to Orange City (Florida) | 5,205.00 mi (8,376.64 km) |
| Caserta to Orangeburg (South Carolina) | 4,989.23 mi (8,029.39 km) |
