| Grass Valley to Mauldin (South Carolina) | 2,143.55 mi (3,449.71 km) |
| Grass Valley to Maumee (Ohio) | 1,958.66 mi (3,152.16 km) |
| Grass Valley to Maumelle (Arkansas) | 1,601.87 mi (2,577.97 km) |
| Grass Valley to Mayagüez (Puerto Rico) | 3,515.28 mi (5,657.30 km) |
| Grass Valley to Mayfield Heights (Ohio) | 2,072.26 mi (3,334.98 km) |
| Grass Valley to Mays Chapel (Maryland) | 2,348.38 mi (3,779.35 km) |
| Grass Valley to Maywood (California) | 395.01 mi (635.71 km) |
| Grass Valley to Maywood (Illinois) | 1,742.06 mi (2,803.57 km) |
| Grass Valley to McAlester (Oklahoma) | 1,419.88 mi (2,285.07 km) |
| Grass Valley to McAllen (Texas) | 1,593.75 mi (2,564.90 km) |
| Grass Valley to McCalla (Alabama) | 1,927.14 mi (3,101.43 km) |
| Grass Valley to McComb (Mississippi) | 1,801.80 mi (2,899.72 km) |
| Grass Valley to McDonough (Georgia) | 2,077.71 mi (3,343.76 km) |
| Grass Valley to McFarland (California) | 264.34 mi (425.41 km) |
| Grass Valley to McHenry (Illinois) | 1,716.61 mi (2,762.62 km) |
