| Orzinuovi to Olympia Heights (Florida) | 4,987.10 mi (8,025.96 km) |
| Orzinuovi to Omaha (Nebraska) | 4,911.23 mi (7,903.86 km) |
| Orzinuovi to On Top of the World Designated Place (Florida) | 4,918.12 mi (7,914.94 km) |
| Orzinuovi to Onalaska (Wisconsin) | 4,607.26 mi (7,414.67 km) |
| Orzinuovi to Oneida (New York) | 4,027.14 mi (6,481.05 km) |
| Orzinuovi to Oneonta (New York) | 4,026.71 mi (6,480.37 km) |
| Orzinuovi to Ontario (California) | 6,043.99 mi (9,726.86 km) |
| Orzinuovi to Ontario (Oregon) | 5,454.98 mi (8,778.95 km) |
| Orzinuovi to Opa-locka (Florida) | 4,975.06 mi (8,006.59 km) |
| Orzinuovi to Opelika (Alabama) | 4,888.93 mi (7,867.98 km) |
| Orzinuovi to Opelousas (Louisiana) | 5,276.28 mi (8,491.35 km) |
| Orzinuovi to Orange (California) | 6,064.38 mi (9,759.68 km) |
| Orzinuovi to Orange (Texas) | 5,366.43 mi (8,636.43 km) |
| Orzinuovi to Orange City (Florida) | 4,881.23 mi (7,855.57 km) |
| Orzinuovi to Orangeburg (South Carolina) | 4,654.99 mi (7,491.48 km) |
