| Huy to Olympia Heights (Florida) | 4,678.63 mi (7,529.53 km) |
| Huy to Omaha (Nebraska) | 4,522.21 mi (7,277.79 km) |
| Huy to On Top of the World Designated Place (Florida) | 4,591.60 mi (7,389.47 km) |
| Huy to Onalaska (Wisconsin) | 4,219.91 mi (6,791.30 km) |
| Huy to Oneida (New York) | 3,667.85 mi (5,902.84 km) |
| Huy to Oneonta (New York) | 3,670.80 mi (5,907.59 km) |
| Huy to Ontario (California) | 5,637.16 mi (9,072.14 km) |
| Huy to Ontario (Oregon) | 5,042.44 mi (8,115.02 km) |
| Huy to Opa-locka (Florida) | 4,666.22 mi (7,509.56 km) |
| Huy to Opelika (Alabama) | 4,542.44 mi (7,310.35 km) |
| Huy to Opelousas (Louisiana) | 4,919.39 mi (7,917.00 km) |
| Huy to Orange (California) | 5,657.53 mi (9,104.91 km) |
| Huy to Orange (Texas) | 5,006.57 mi (8,057.30 km) |
| Huy to Orange City (Florida) | 4,558.25 mi (7,335.79 km) |
| Huy to Orangeburg (South Carolina) | 4,317.33 mi (6,948.07 km) |
