| Tucson Mountains to Mattoon (Illinois) | 1,360.67 mi (2,189.79 km) |
| Tucson Mountains to Mauldin (South Carolina) | 1,660.53 mi (2,672.36 km) |
| Tucson Mountains to Maumee (Ohio) | 1,635.53 mi (2,632.12 km) |
| Tucson Mountains to Maumelle (Arkansas) | 1,088.18 mi (1,751.26 km) |
| Tucson Mountains to Mayagüez (Puerto Rico) | 2,890.04 mi (4,651.07 km) |
| Tucson Mountains to Mayfield Heights (Ohio) | 1,746.09 mi (2,810.06 km) |
| Tucson Mountains to Mays Chapel (Maryland) | 1,977.10 mi (3,181.84 km) |
| Tucson Mountains to Maywood (California) | 427.84 mi (688.54 km) |
| Tucson Mountains to Maywood (Illinois) | 1,435.66 mi (2,310.47 km) |
| Tucson Mountains to McAlester (Oklahoma) | 898.46 mi (1,445.93 km) |
| Tucson Mountains to McAllen (Texas) | 878.45 mi (1,413.73 km) |
| Tucson Mountains to McCalla (Alabama) | 1,395.41 mi (2,245.70 km) |
| Tucson Mountains to McComb (Mississippi) | 1,210.75 mi (1,948.52 km) |
| Tucson Mountains to McDonough (Georgia) | 1,560.46 mi (2,511.32 km) |
| Tucson Mountains to McFarland (California) | 523.05 mi (841.76 km) |
