| Grass Valley to McKeesport (Pennsylvania) | 2,169.42 mi (3,491.35 km) |
| Grass Valley to McKinleyville (California) | 199.78 mi (321.51 km) |
| Grass Valley to McKinney (Texas) | 1,416.61 mi (2,279.82 km) |
| Grass Valley to McLean (Virginia) | 2,328.68 mi (3,747.65 km) |
| Grass Valley to McMinnville (Oregon) | 427.87 mi (688.60 km) |
| Grass Valley to McMinnville (Tennessee) | 1,937.63 mi (3,118.31 km) |
| Grass Valley to McNair (Virginia) | 2,317.25 mi (3,729.26 km) |
| Grass Valley to McPherson (Kansas) | 1,257.50 mi (2,023.74 km) |
| Grass Valley to Mead Valley (California) | 427.05 mi (687.26 km) |
| Grass Valley to Meadow Woods (Florida) | 2,378.43 mi (3,827.72 km) |
| Grass Valley to Meadowbrook (Virginia) | 2,342.42 mi (3,769.76 km) |
| Grass Valley to Meadville (Pennsylvania) | 2,137.50 mi (3,439.97 km) |
| Grass Valley to Mebane (North Carolina) | 2,275.42 mi (3,661.94 km) |
| Grass Valley to Mechanicsville (Virginia) | 2,344.73 mi (3,773.47 km) |
| Grass Valley to Medford (Massachusetts) | 2,582.88 mi (4,156.75 km) |
