| Fully to Oakley (California) | 5,815.90 mi (9,359.79 km) |
| Fully to Oakton (Virginia) | 4,122.31 mi (6,634.22 km) |
| Fully to Oakville (Missouri) | 4,683.65 mi (7,537.60 km) |
| Fully to Oatfield (Oregon) | 5,410.62 mi (8,707.55 km) |
| Fully to Ocala (Florida) | 4,763.85 mi (7,666.67 km) |
| Fully to Ocean Acres (New Jersey) | 3,957.15 mi (6,368.41 km) |
| Fully to Ocean City (New Jersey) | 3,990.20 mi (6,421.60 km) |
| Fully to Ocean Pines (Maryland) | 4,049.94 mi (6,517.75 km) |
| Fully to Ocean Pointe (Hawaii) | 7,684.56 mi (12,367.10 km) |
| Fully to Ocean Springs (Mississippi) | 4,997.86 mi (8,043.28 km) |
| Fully to Oceanside (California) | 5,951.74 mi (9,578.40 km) |
| Fully to Oceanside (New York) | 3,893.98 mi (6,266.75 km) |
| Fully to Ocoee (Florida) | 4,763.79 mi (7,666.58 km) |
| Fully to Oconomowoc (Wisconsin) | 4,400.99 mi (7,082.71 km) |
| Fully to Odenton (Maryland) | 4,088.83 mi (6,580.33 km) |
