| Catanzaro to Olympia Heights (Florida) | 5,470.27 mi (8,803.55 km) |
| Catanzaro to Omaha (Nebraska) | 5,466.32 mi (8,797.19 km) |
| Catanzaro to On Top of the World Designated Place (Florida) | 5,419.59 mi (8,721.99 km) |
| Catanzaro to Onalaska (Wisconsin) | 5,161.52 mi (8,306.67 km) |
| Catanzaro to Oneida (New York) | 4,561.41 mi (7,340.88 km) |
| Catanzaro to Oneonta (New York) | 4,558.22 mi (7,335.75 km) |
| Catanzaro to Ontario (California) | 6,607.54 mi (10,633.80 km) |
| Catanzaro to Ontario (Oregon) | 6,017.61 mi (9,684.40 km) |
| Catanzaro to Opa-locka (Florida) | 5,458.68 mi (8,784.90 km) |
| Catanzaro to Opelika (Alabama) | 5,409.43 mi (8,705.63 km) |
| Catanzaro to Opelousas (Louisiana) | 5,805.05 mi (9,342.33 km) |
| Catanzaro to Orange (California) | 6,627.93 mi (10,666.62 km) |
| Catanzaro to Orange (Texas) | 5,897.63 mi (9,491.32 km) |
| Catanzaro to Orange City (Florida) | 5,379.43 mi (8,657.35 km) |
| Catanzaro to Orangeburg (South Carolina) | 5,168.19 mi (8,317.40 km) |
