| Northport to Odessa (Texas) | 863.13 mi (1,389.08 km) |
| Northport to Ogden (Utah) | 1,442.86 mi (2,322.05 km) |
| Northport to Oildale (California) | 1,791.82 mi (2,883.66 km) |
| Northport to Ojus (Florida) | 673.53 mi (1,083.94 km) |
| Northport to Okemos (Michigan) | 675.25 mi (1,086.71 km) |
| Northport to Oklahoma City (Oklahoma) | 585.40 mi (942.11 km) |
| Northport to Okmulgee (Oklahoma) | 505.77 mi (813.96 km) |
| Northport to Olathe (Kansas) | 559.67 mi (900.71 km) |
| Northport to Old Jamestown (Missouri) | 413.69 mi (665.77 km) |
| Northport to Oldsmar (Florida) | 463.89 mi (746.56 km) |
| Northport to Olean (New York) | 788.30 mi (1,268.65 km) |
| Northport to Olive Branch (Mississippi) | 174.25 mi (280.43 km) |
| Northport to Olivehurst (California) | 1,924.54 mi (3,097.25 km) |
| Northport to Olney (Maryland) | 713.37 mi (1,148.06 km) |
| Northport to Olympia (Washington) | 2,069.43 mi (3,330.42 km) |
