| Gig Harbor to Odessa (Texas) | 1,508.59 mi (2,427.85 km) |
| Gig Harbor to Ogden (Utah) | 673.09 mi (1,083.24 km) |
| Gig Harbor to Oildale (California) | 842.89 mi (1,356.49 km) |
| Gig Harbor to Ojus (Florida) | 2,729.57 mi (4,392.83 km) |
| Gig Harbor to Okemos (Michigan) | 1,872.68 mi (3,013.79 km) |
| Gig Harbor to Oklahoma City (Oklahoma) | 1,526.49 mi (2,456.64 km) |
| Gig Harbor to Okmulgee (Oklahoma) | 1,585.40 mi (2,551.45 km) |
| Gig Harbor to Olathe (Kansas) | 1,507.66 mi (2,426.34 km) |
| Gig Harbor to Old Jamestown (Missouri) | 1,718.14 mi (2,765.07 km) |
| Gig Harbor to Oldsmar (Florida) | 2,517.93 mi (4,052.22 km) |
| Gig Harbor to Olean (New York) | 2,168.94 mi (3,490.58 km) |
| Gig Harbor to Olive Branch (Mississippi) | 1,887.41 mi (3,037.49 km) |
| Gig Harbor to Olivehurst (California) | 572.80 mi (921.83 km) |
| Gig Harbor to Olney (Maryland) | 2,324.95 mi (3,741.65 km) |
| Gig Harbor to Olympia (Washington) | 24.68 mi (39.72 km) |
