| Napa to Mendota (California) | 149.86 mi (241.17 km) |
| Napa to Mendota Heights (Minnesota) | 1,564.46 mi (2,517.76 km) |
| Napa to Menifee (California) | 427.75 mi (688.39 km) |
| Napa to Menlo Park (California) | 57.74 mi (92.92 km) |
| Napa to Menomonee Falls (Wisconsin) | 1,807.81 mi (2,909.39 km) |
| Napa to Menomonie (Wisconsin) | 1,624.47 mi (2,614.33 km) |
| Napa to Mentor (Ohio) | 2,160.56 mi (3,477.09 km) |
| Napa to Mequon (Wisconsin) | 1,814.70 mi (2,920.47 km) |
| Napa to Merced (California) | 120.83 mi (194.46 km) |
| Napa to Mercedes (Texas) | 1,646.36 mi (2,649.56 km) |
| Napa to Mercer Island (Washington) | 640.41 mi (1,030.64 km) |
| Napa to Mercerville (New Jersey) | 2,519.44 mi (4,054.65 km) |
| Napa to Meriden (Connecticut) | 2,597.05 mi (4,179.56 km) |
| Napa to Meridian (Idaho) | 479.00 mi (770.88 km) |
| Napa to Meridian (Mississippi) | 1,926.77 mi (3,100.83 km) |
