| Tigard to Oak Grove (South Carolina) | 2,320.45 mi (3,734.40 km) |
| Tigard to Oak Harbor (Washington) | 198.61 mi (319.64 km) |
| Tigard to Oak Hills (Oregon) | 8.53 mi (13.72 km) |
| Tigard to Oak Lawn (Illinois) | 1,758.17 mi (2,829.50 km) |
| Tigard to Oak Park (California) | 804.98 mi (1,295.50 km) |
| Tigard to Oak Park (Illinois) | 1,752.25 mi (2,819.97 km) |
| Tigard to Oak Park (Michigan) | 1,960.68 mi (3,155.41 km) |
| Tigard to Oak Ridge (Florida) | 2,530.18 mi (4,071.92 km) |
| Tigard to Oak Ridge (New Jersey) | 2,413.02 mi (3,883.39 km) |
| Tigard to Oak Ridge (Tennessee) | 2,096.91 mi (3,374.66 km) |
| Tigard to Oakdale (California) | 538.72 mi (866.99 km) |
| Tigard to Oakdale (Minnesota) | 1,443.63 mi (2,323.30 km) |
| Tigard to Oakland (California) | 528.22 mi (850.09 km) |
| Tigard to Oakland (New Jersey) | 2,425.27 mi (3,903.10 km) |
| Tigard to Oakland Park (Florida) | 2,691.44 mi (4,331.46 km) |
