| Dix Hills to Olympia Heights (Florida) | 1,116.64 mi (1,797.06 km) |
| Dix Hills to Omaha (Nebraska) | 1,180.96 mi (1,900.57 km) |
| Dix Hills to On Top of the World Designated Place (Florida) | 952.72 mi (1,533.25 km) |
| Dix Hills to Onalaska (Wisconsin) | 935.10 mi (1,504.90 km) |
| Dix Hills to Oneida (New York) | 197.34 mi (317.60 km) |
| Dix Hills to Oneonta (New York) | 144.90 mi (233.20 km) |
| Dix Hills to Ontario (California) | 2,447.16 mi (3,938.32 km) |
| Dix Hills to Ontario (Oregon) | 2,211.04 mi (3,558.32 km) |
| Dix Hills to Opa-locka (Florida) | 1,103.46 mi (1,775.85 km) |
| Dix Hills to Opelika (Alabama) | 870.83 mi (1,401.46 km) |
| Dix Hills to Opelousas (Louisiana) | 1,265.10 mi (2,035.98 km) |
| Dix Hills to Orange (California) | 2,465.13 mi (3,967.24 km) |
| Dix Hills to Orange (Texas) | 1,360.57 mi (2,189.62 km) |
| Dix Hills to Orange City (Florida) | 934.72 mi (1,504.28 km) |
| Dix Hills to Orangeburg (South Carolina) | 652.96 mi (1,050.84 km) |
