| Summerlin South to Mattoon (Illinois) | 1,484.82 mi (2,389.59 km) |
| Summerlin South to Mauldin (South Carolina) | 1,852.35 mi (2,981.06 km) |
| Summerlin South to Maumee (Ohio) | 1,734.85 mi (2,791.98 km) |
| Summerlin South to Maumelle (Arkansas) | 1,290.13 mi (2,076.27 km) |
| Summerlin South to Mayagüez (Puerto Rico) | 3,172.78 mi (5,106.10 km) |
| Summerlin South to Mayfield Heights (Ohio) | 1,849.04 mi (2,975.75 km) |
| Summerlin South to Mays Chapel (Maryland) | 2,108.50 mi (3,393.30 km) |
| Summerlin South to Maywood (California) | 218.73 mi (352.01 km) |
| Summerlin South to Maywood (Illinois) | 1,521.32 mi (2,448.32 km) |
| Summerlin South to McAlester (Oklahoma) | 1,101.10 mi (1,772.05 km) |
| Summerlin South to McAllen (Texas) | 1,216.79 mi (1,958.24 km) |
| Summerlin South to McCalla (Alabama) | 1,613.48 mi (2,596.65 km) |
| Summerlin South to McComb (Mississippi) | 1,464.17 mi (2,356.35 km) |
| Summerlin South to McDonough (Georgia) | 1,771.62 mi (2,851.14 km) |
| Summerlin South to McFarland (California) | 220.92 mi (355.53 km) |
