| The Dalles to Mattoon (Illinois) | 1,710.54 mi (2,752.85 km) |
| The Dalles to Mauldin (South Carolina) | 2,159.07 mi (3,474.68 km) |
| The Dalles to Maumee (Ohio) | 1,880.70 mi (3,026.69 km) |
| The Dalles to Maumelle (Arkansas) | 1,677.90 mi (2,700.31 km) |
| The Dalles to Mayagüez (Puerto Rico) | 3,604.08 mi (5,800.21 km) |
| The Dalles to Mayfield Heights (Ohio) | 1,988.34 mi (3,199.92 km) |
| The Dalles to Mays Chapel (Maryland) | 2,277.21 mi (3,664.82 km) |
| The Dalles to Maywood (California) | 818.06 mi (1,316.54 km) |
| The Dalles to Maywood (Illinois) | 1,671.54 mi (2,690.08 km) |
| The Dalles to McAlester (Oklahoma) | 1,519.92 mi (2,446.08 km) |
| The Dalles to McAllen (Texas) | 1,841.67 mi (2,963.88 km) |
| The Dalles to McCalla (Alabama) | 1,990.73 mi (3,203.78 km) |
| The Dalles to McComb (Mississippi) | 1,918.33 mi (3,087.26 km) |
| The Dalles to McDonough (Georgia) | 2,121.60 mi (3,414.39 km) |
| The Dalles to McFarland (California) | 693.35 mi (1,115.83 km) |
