| The Dalles to Oakleaf Plantation (Florida) | 2,364.86 mi (3,805.87 km) |
| The Dalles to Oakley (California) | 526.63 mi (847.52 km) |
| The Dalles to Oakton (Virginia) | 2,262.39 mi (3,640.97 km) |
| The Dalles to Oakville (Missouri) | 1,647.68 mi (2,651.68 km) |
| The Dalles to Oatfield (Oregon) | 69.66 mi (112.11 km) |
| The Dalles to Ocala (Florida) | 2,392.63 mi (3,850.57 km) |
| The Dalles to Ocean Acres (New Jersey) | 2,381.92 mi (3,833.33 km) |
| The Dalles to Ocean City (New Jersey) | 2,380.77 mi (3,831.48 km) |
| The Dalles to Ocean Pines (Maryland) | 2,381.82 mi (3,833.16 km) |
| The Dalles to Ocean Pointe (Hawaii) | 2,668.55 mi (4,294.62 km) |
| The Dalles to Ocean Springs (Mississippi) | 2,032.04 mi (3,270.25 km) |
| The Dalles to Oceanside (California) | 879.76 mi (1,415.84 km) |
| The Dalles to Oceanside (New York) | 2,386.77 mi (3,841.14 km) |
| The Dalles to Ocoee (Florida) | 2,447.77 mi (3,939.30 km) |
| The Dalles to Oconomowoc (Wisconsin) | 1,612.87 mi (2,595.67 km) |
