| Tigard to Ridgefield Park (New Jersey) | 2,440.77 mi (3,928.03 km) |
| Tigard to Ridgeland (Mississippi) | 1,952.40 mi (3,142.09 km) |
| Tigard to Ridgewood (New Jersey) | 2,432.76 mi (3,915.14 km) |
| Tigard to Rifle (Colorado) | 864.45 mi (1,391.21 km) |
| Tigard to Rincon (Georgia) | 2,380.53 mi (3,831.10 km) |
| Tigard to Ringwood (New Jersey) | 2,421.55 mi (3,897.11 km) |
| Tigard to Río Grande (Puerto Rico) | 3,730.56 mi (6,003.75 km) |
| Tigard to Rio Grande City (Texas) | 1,864.88 mi (3,001.23 km) |
| Tigard to Rio Linda (California) | 470.48 mi (757.16 km) |
| Tigard to Rio Rancho (New Mexico) | 1,095.42 mi (1,762.91 km) |
| Tigard to Rio Rico (Arizona) | 1,151.96 mi (1,853.89 km) |
| Tigard to Ripon (California) | 537.58 mi (865.14 km) |
| Tigard to River Edge (New Jersey) | 2,437.83 mi (3,923.32 km) |
| Tigard to River Falls (Wisconsin) | 1,461.70 mi (2,352.37 km) |
| Tigard to River Forest (Illinois) | 1,750.64 mi (2,817.38 km) |
