| Napa to Marrero (Louisiana) | 1,920.09 mi (3,090.08 km) |
| Napa to Marshall (Minnesota) | 1,431.51 mi (2,303.79 km) |
| Napa to Marshall (Missouri) | 1,563.30 mi (2,515.89 km) |
| Napa to Marshall (Texas) | 1,616.54 mi (2,601.57 km) |
| Napa to Marshalltown (Iowa) | 1,565.40 mi (2,519.26 km) |
| Napa to Marshfield (Wisconsin) | 1,708.07 mi (2,748.88 km) |
| Napa to Martha Lake (Washington) | 659.88 mi (1,061.97 km) |
| Napa to Martin (Tennessee) | 1,832.99 mi (2,949.91 km) |
| Napa to Martinez (California) | 22.97 mi (36.97 km) |
| Napa to Martinez (Georgia) | 2,256.02 mi (3,630.71 km) |
| Napa to Martinsburg (West Virginia) | 2,361.10 mi (3,799.82 km) |
| Napa to Martinsville (Indiana) | 1,918.72 mi (3,087.88 km) |
| Napa to Martinsville (New Jersey) | 2,519.92 mi (4,055.42 km) |
| Napa to Martinsville (Virginia) | 2,308.67 mi (3,715.45 km) |
| Napa to Maryland City (Maryland) | 2,427.74 mi (3,907.07 km) |
