| Gig Harbor to Oakley (California) | 647.10 mi (1,041.41 km) |
| Gig Harbor to Oakton (Virginia) | 2,322.93 mi (3,738.39 km) |
| Gig Harbor to Oakville (Missouri) | 1,730.39 mi (2,784.79 km) |
| Gig Harbor to Oatfield (Oregon) | 132.85 mi (213.79 km) |
| Gig Harbor to Ocala (Florida) | 2,488.81 mi (4,005.36 km) |
| Gig Harbor to Ocean Acres (New Jersey) | 2,435.30 mi (3,919.24 km) |
| Gig Harbor to Ocean City (New Jersey) | 2,436.21 mi (3,920.71 km) |
| Gig Harbor to Ocean Pines (Maryland) | 2,440.98 mi (3,928.38 km) |
| Gig Harbor to Ocean Pointe (Hawaii) | 2,665.81 mi (4,290.20 km) |
| Gig Harbor to Ocean Springs (Mississippi) | 2,136.78 mi (3,438.82 km) |
| Gig Harbor to Oceanside (California) | 1,013.38 mi (1,630.88 km) |
| Gig Harbor to Oceanside (New York) | 2,436.21 mi (3,920.70 km) |
| Gig Harbor to Ocoee (Florida) | 2,544.24 mi (4,094.56 km) |
| Gig Harbor to Oconomowoc (Wisconsin) | 1,671.50 mi (2,690.01 km) |
| Gig Harbor to Odenton (Maryland) | 2,345.33 mi (3,774.44 km) |
