| East Northport to Olympia Heights (Florida) | 1,121.75 mi (1,805.28 km) |
| East Northport to Omaha (Nebraska) | 1,180.88 mi (1,900.44 km) |
| East Northport to On Top of the World Designated Place (Florida) | 957.44 mi (1,540.86 km) |
| East Northport to Onalaska (Wisconsin) | 934.10 mi (1,503.30 km) |
| East Northport to Oneida (New York) | 193.61 mi (311.59 km) |
| East Northport to Oneonta (New York) | 141.25 mi (227.32 km) |
| East Northport to Ontario (California) | 2,447.58 mi (3,939.00 km) |
| East Northport to Ontario (Oregon) | 2,209.90 mi (3,556.49 km) |
| East Northport to Opa-locka (Florida) | 1,108.57 mi (1,784.07 km) |
| East Northport to Opelika (Alabama) | 874.54 mi (1,407.44 km) |
| East Northport to Opelousas (Louisiana) | 1,268.23 mi (2,041.03 km) |
| East Northport to Orange (California) | 2,465.57 mi (3,967.95 km) |
| East Northport to Orange (Texas) | 1,363.57 mi (2,194.45 km) |
| East Northport to Orange City (Florida) | 939.58 mi (1,512.12 km) |
| East Northport to Orangeburg (South Carolina) | 657.37 mi (1,057.94 km) |
