| Forest Grove to Mauldin (South Carolina) | 2,251.35 mi (3,623.19 km) |
| Forest Grove to Maumee (Ohio) | 1,974.05 mi (3,176.92 km) |
| Forest Grove to Maumelle (Arkansas) | 1,766.55 mi (2,842.98 km) |
| Forest Grove to Mayagüez (Puerto Rico) | 3,693.98 mi (5,944.89 km) |
| Forest Grove to Mayfield Heights (Ohio) | 2,081.59 mi (3,350.00 km) |
| Forest Grove to Mays Chapel (Maryland) | 2,370.54 mi (3,815.02 km) |
| Forest Grove to Maywood (California) | 838.39 mi (1,349.26 km) |
| Forest Grove to Maywood (Illinois) | 1,764.96 mi (2,840.43 km) |
| Forest Grove to McAlester (Oklahoma) | 1,606.41 mi (2,585.27 km) |
| Forest Grove to McAllen (Texas) | 1,912.51 mi (3,077.89 km) |
| Forest Grove to McCalla (Alabama) | 2,080.70 mi (3,348.57 km) |
| Forest Grove to McComb (Mississippi) | 2,004.55 mi (3,226.01 km) |
| Forest Grove to McDonough (Georgia) | 2,212.74 mi (3,561.05 km) |
| Forest Grove to McFarland (California) | 709.70 mi (1,142.14 km) |
| Forest Grove to McHenry (Illinois) | 1,732.57 mi (2,788.30 km) |
