| Nova Dubnica to Olympia Heights (Florida) | 5,259.19 mi (8,463.84 km) |
| Nova Dubnica to Omaha (Nebraska) | 5,033.62 mi (8,100.83 km) |
| Nova Dubnica to On Top of the World Designated Place (Florida) | 5,165.59 mi (8,313.21 km) |
| Nova Dubnica to Onalaska (Wisconsin) | 4,735.91 mi (7,621.71 km) |
| Nova Dubnica to Oneida (New York) | 4,222.54 mi (6,795.52 km) |
| Nova Dubnica to Oneonta (New York) | 4,228.41 mi (6,804.97 km) |
| Nova Dubnica to Ontario (California) | 6,091.34 mi (9,803.07 km) |
| Nova Dubnica to Ontario (Oregon) | 5,464.56 mi (8,794.37 km) |
| Nova Dubnica to Opa-locka (Florida) | 5,246.69 mi (8,443.72 km) |
| Nova Dubnica to Opelika (Alabama) | 5,104.92 mi (8,215.57 km) |
| Nova Dubnica to Opelousas (Louisiana) | 5,472.51 mi (8,807.15 km) |
| Nova Dubnica to Orange (California) | 6,111.46 mi (9,835.45 km) |
| Nova Dubnica to Orange (Texas) | 5,556.64 mi (8,942.55 km) |
| Nova Dubnica to Orange City (Florida) | 5,133.84 mi (8,262.12 km) |
| Nova Dubnica to Orangeburg (South Carolina) | 4,886.04 mi (7,863.32 km) |
