| Genoa to Olympia Heights (Florida) | 4,962.63 mi (7,986.57 km) |
| Genoa to Omaha (Nebraska) | 4,917.71 mi (7,914.28 km) |
| Genoa to On Top of the World Designated Place (Florida) | 4,899.13 mi (7,884.39 km) |
| Genoa to Onalaska (Wisconsin) | 4,613.02 mi (7,423.93 km) |
| Genoa to Oneida (New York) | 4,020.56 mi (6,470.47 km) |
| Genoa to Oneonta (New York) | 4,018.83 mi (6,467.68 km) |
| Genoa to Ontario (California) | 6,062.79 mi (9,757.11 km) |
| Genoa to Ontario (Oregon) | 5,481.34 mi (8,821.37 km) |
| Genoa to Opa-locka (Florida) | 4,950.71 mi (7,967.40 km) |
| Genoa to Opelika (Alabama) | 4,876.69 mi (7,848.28 km) |
| Genoa to Opelousas (Louisiana) | 5,267.58 mi (8,477.35 km) |
| Genoa to Orange (California) | 6,083.20 mi (9,789.96 km) |
| Genoa to Orange (Texas) | 5,358.83 mi (8,624.20 km) |
| Genoa to Orange City (Florida) | 4,861.18 mi (7,823.31 km) |
| Genoa to Orangeburg (South Carolina) | 4,639.90 mi (7,467.20 km) |
