| Napa to Maryland Heights (Missouri) | 1,712.25 mi (2,755.59 km) |
| Napa to Marysville (California) | 70.57 mi (113.57 km) |
| Napa to Marysville (Ohio) | 2,070.73 mi (3,332.51 km) |
| Napa to Marysville (Washington) | 676.01 mi (1,087.93 km) |
| Napa to Maryville (Missouri) | 1,467.12 mi (2,361.10 km) |
| Napa to Maryville (Tennessee) | 2,106.25 mi (3,389.68 km) |
| Napa to Mason (Ohio) | 2,031.46 mi (3,269.33 km) |
| Napa to Mason City (Iowa) | 1,551.94 mi (2,497.61 km) |
| Napa to Massapequa (New York) | 2,575.48 mi (4,144.84 km) |
| Napa to Massapequa Park (New York) | 2,576.34 mi (4,146.22 km) |
| Napa to Massillon (Ohio) | 2,159.86 mi (3,475.95 km) |
| Napa to Mastic (New York) | 2,605.11 mi (4,192.52 km) |
| Napa to Mastic Beach (New York) | 2,606.33 mi (4,194.49 km) |
| Napa to Matteson (Illinois) | 1,832.58 mi (2,949.25 km) |
| Napa to Matthews (North Carolina) | 2,294.85 mi (3,693.20 km) |
