| Sacile to Olympia Heights (Florida) | 5,090.67 mi (8,192.64 km) |
| Sacile to Omaha (Nebraska) | 4,979.35 mi (8,013.50 km) |
| Sacile to On Top of the World Designated Place (Florida) | 5,016.21 mi (8,072.82 km) |
| Sacile to Onalaska (Wisconsin) | 4,676.57 mi (7,526.21 km) |
| Sacile to Oneida (New York) | 4,112.14 mi (6,617.86 km) |
| Sacile to Oneonta (New York) | 4,113.23 mi (6,619.60 km) |
| Sacile to Ontario (California) | 6,094.14 mi (9,807.57 km) |
| Sacile to Ontario (Oregon) | 5,494.22 mi (8,842.09 km) |
| Sacile to Opa-locka (Florida) | 5,078.53 mi (8,173.10 km) |
| Sacile to Opelika (Alabama) | 4,979.81 mi (8,014.23 km) |
| Sacile to Opelousas (Louisiana) | 5,362.91 mi (8,630.77 km) |
| Sacile to Orange (California) | 6,114.49 mi (9,840.32 km) |
| Sacile to Orange (Texas) | 5,451.73 mi (8,773.71 km) |
| Sacile to Orange City (Florida) | 4,980.44 mi (8,015.24 km) |
| Sacile to Orangeburg (South Carolina) | 4,749.11 mi (7,642.95 km) |
