| Rio Rico to Mattoon (Illinois) | 1,382.28 mi (2,224.57 km) |
| Rio Rico to Mauldin (South Carolina) | 1,669.32 mi (2,686.51 km) |
| Rio Rico to Maumee (Ohio) | 1,659.64 mi (2,670.94 km) |
| Rio Rico to Maumelle (Arkansas) | 1,098.01 mi (1,767.07 km) |
| Rio Rico to Mayagüez (Puerto Rico) | 2,877.01 mi (4,630.11 km) |
| Rio Rico to Mayfield Heights (Ohio) | 1,769.29 mi (2,847.39 km) |
| Rio Rico to Mays Chapel (Maryland) | 1,995.27 mi (3,211.07 km) |
| Rio Rico to Maywood (California) | 452.31 mi (727.92 km) |
| Rio Rico to Maywood (Illinois) | 1,462.56 mi (2,353.76 km) |
| Rio Rico to McAlester (Oklahoma) | 909.88 mi (1,464.30 km) |
| Rio Rico to McAllen (Texas) | 851.89 mi (1,370.99 km) |
| Rio Rico to McCalla (Alabama) | 1,400.17 mi (2,253.35 km) |
| Rio Rico to McComb (Mississippi) | 1,208.72 mi (1,945.24 km) |
| Rio Rico to McDonough (Georgia) | 1,565.90 mi (2,520.08 km) |
| Rio Rico to McFarland (California) | 555.69 mi (894.30 km) |
