| Tigard to Oakleaf Plantation (Florida) | 2,438.11 mi (3,923.75 km) |
| Tigard to Oakley (California) | 516.47 mi (831.18 km) |
| Tigard to Oakton (Virginia) | 2,340.76 mi (3,767.08 km) |
| Tigard to Oakville (Missouri) | 1,723.69 mi (2,774.02 km) |
| Tigard to Oatfield (Oregon) | 9.27 mi (14.92 km) |
| Tigard to Ocala (Florida) | 2,465.03 mi (3,967.08 km) |
| Tigard to Ocean Acres (New Jersey) | 2,460.50 mi (3,959.80 km) |
| Tigard to Ocean City (New Jersey) | 2,459.31 mi (3,957.88 km) |
| Tigard to Ocean Pines (Maryland) | 2,460.23 mi (3,959.36 km) |
| Tigard to Ocean Pointe (Hawaii) | 2,593.84 mi (4,174.38 km) |
| Tigard to Ocean Springs (Mississippi) | 2,101.48 mi (3,382.01 km) |
| Tigard to Oceanside (California) | 891.68 mi (1,435.02 km) |
| Tigard to Oceanside (New York) | 2,465.37 mi (3,967.63 km) |
| Tigard to Ocoee (Florida) | 2,520.04 mi (4,055.62 km) |
| Tigard to Oconomowoc (Wisconsin) | 1,691.37 mi (2,722.00 km) |
