| Ljubljana to Olympia Heights (Florida) | 5,178.45 mi (8,333.92 km) |
| Ljubljana to Omaha (Nebraska) | 5,046.91 mi (8,122.21 km) |
| Ljubljana to On Top of the World Designated Place (Florida) | 5,101.17 mi (8,209.53 km) |
| Ljubljana to Onalaska (Wisconsin) | 4,744.99 mi (7,636.32 km) |
| Ljubljana to Oneida (New York) | 4,190.11 mi (6,743.33 km) |
| Ljubljana to Oneonta (New York) | 4,192.06 mi (6,746.46 km) |
| Ljubljana to Ontario (California) | 6,149.69 mi (9,896.97 km) |
| Ljubljana to Ontario (Oregon) | 5,542.84 mi (8,920.33 km) |
| Ljubljana to Opa-locka (Florida) | 5,166.25 mi (8,314.28 km) |
| Ljubljana to Opelika (Alabama) | 5,060.82 mi (8,144.61 km) |
| Ljubljana to Opelousas (Louisiana) | 5,441.41 mi (8,757.11 km) |
| Ljubljana to Orange (California) | 6,170.00 mi (9,929.65 km) |
| Ljubljana to Orange (Texas) | 5,529.43 mi (8,898.76 km) |
| Ljubljana to Orange City (Florida) | 5,065.99 mi (8,152.92 km) |
| Ljubljana to Orangeburg (South Carolina) | 4,831.98 mi (7,776.32 km) |
