| Northlake to Olympia Heights (Florida) | 1,198.73 mi (1,929.17 km) |
| Northlake to Omaha (Nebraska) | 423.28 mi (681.20 km) |
| Northlake to On Top of the World Designated Place (Florida) | 939.13 mi (1,511.38 km) |
| Northlake to Onalaska (Wisconsin) | 215.69 mi (347.12 km) |
| Northlake to Oneida (New York) | 628.30 mi (1,011.15 km) |
| Northlake to Oneonta (New York) | 657.74 mi (1,058.53 km) |
| Northlake to Ontario (California) | 1,696.64 mi (2,730.48 km) |
| Northlake to Ontario (Oregon) | 1,469.25 mi (2,364.53 km) |
| Northlake to Opa-locka (Florida) | 1,189.00 mi (1,913.52 km) |
| Northlake to Opelika (Alabama) | 654.17 mi (1,052.78 km) |
| Northlake to Opelousas (Louisiana) | 820.32 mi (1,320.18 km) |
| Northlake to Orange (California) | 1,715.13 mi (2,760.24 km) |
| Northlake to Orange (Texas) | 877.40 mi (1,412.04 km) |
| Northlake to Orange City (Florida) | 970.30 mi (1,561.55 km) |
| Northlake to Orangeburg (South Carolina) | 696.98 mi (1,121.68 km) |
