| Launceston to Olympia Heights (Florida) | 4,263.43 mi (6,861.32 km) |
| Launceston to Omaha (Nebraska) | 4,164.71 mi (6,702.45 km) |
| Launceston to On Top of the World Designated Place (Florida) | 4,182.15 mi (6,730.52 km) |
| Launceston to Onalaska (Wisconsin) | 3,860.01 mi (6,212.08 km) |
| Launceston to Oneida (New York) | 3,276.76 mi (5,273.43 km) |
| Launceston to Oneonta (New York) | 3,277.09 mi (5,273.97 km) |
| Launceston to Ontario (California) | 5,318.58 mi (8,559.43 km) |
| Launceston to Ontario (Oregon) | 4,752.22 mi (7,647.96 km) |
| Launceston to Opa-locka (Florida) | 4,251.11 mi (6,841.50 km) |
| Launceston to Opelika (Alabama) | 4,142.79 mi (6,667.18 km) |
| Launceston to Opelousas (Louisiana) | 4,526.83 mi (7,285.23 km) |
| Launceston to Orange (California) | 5,339.01 mi (8,592.31 km) |
| Launceston to Orange (Texas) | 4,616.30 mi (7,429.21 km) |
| Launceston to Orange City (Florida) | 4,147.44 mi (6,674.65 km) |
| Launceston to Orangeburg (South Carolina) | 3,912.70 mi (6,296.88 km) |
