| The Dalles to Owosso (Michigan) | 1,822.43 mi (2,932.91 km) |
| The Dalles to Oxford (Alabama) | 2,033.90 mi (3,273.24 km) |
| The Dalles to Oxford (Mississippi) | 1,831.03 mi (2,946.77 km) |
| The Dalles to Oxford (Ohio) | 1,884.52 mi (3,032.84 km) |
| The Dalles to Oxnard (California) | 795.30 mi (1,279.92 km) |
| The Dalles to Oxon Hill (Maryland) | 2,281.33 mi (3,671.45 km) |
| The Dalles to Ozark (Alabama) | 2,131.69 mi (3,430.62 km) |
| The Dalles to Ozark (Missouri) | 1,557.23 mi (2,506.13 km) |
| The Dalles to Pace (Florida) | 2,096.87 mi (3,374.59 km) |
| The Dalles to Pacific Grove (California) | 622.11 mi (1,001.18 km) |
| The Dalles to Pacifica (California) | 556.36 mi (895.37 km) |
| The Dalles to Paducah (Kentucky) | 1,773.56 mi (2,854.28 km) |
| The Dalles to Pahrump (Nevada) | 702.07 mi (1,129.88 km) |
| The Dalles to Painesville (Ohio) | 1,992.68 mi (3,206.91 km) |
| The Dalles to Palatine (Illinois) | 1,656.32 mi (2,665.59 km) |
