| Tigard to Orangeburg (South Carolina) | 2,352.13 mi (3,785.39 km) |
| Tigard to Orangevale (California) | 472.22 mi (759.96 km) |
| Tigard to Orchards (Washington) | 22.07 mi (35.51 km) |
| Tigard to Orcutt (California) | 739.75 mi (1,190.52 km) |
| Tigard to Oregon (Ohio) | 1,968.24 mi (3,167.58 km) |
| Tigard to Oregon (Wisconsin) | 1,651.90 mi (2,658.47 km) |
| Tigard to Oregon City (Oregon) | 10.91 mi (17.55 km) |
| Tigard to Orem (Utah) | 662.87 mi (1,066.79 km) |
| Tigard to Orinda (California) | 522.10 mi (840.23 km) |
| Tigard to Orland Park (Illinois) | 1,755.46 mi (2,825.14 km) |
| Tigard to Orlando (Florida) | 2,533.75 mi (4,077.68 km) |
| Tigard to Ormond Beach (Florida) | 2,509.61 mi (4,038.83 km) |
| Tigard to Oro Valley (Arizona) | 1,097.42 mi (1,766.12 km) |
| Tigard to Oroville (California) | 413.99 mi (666.25 km) |
| Tigard to Oshkosh (Wisconsin) | 1,670.13 mi (2,687.81 km) |
