| Sofia to Mauldin (South Carolina) | 5,323.22 mi (8,566.90 km) |
| Sofia to Maumee (Ohio) | 5,056.59 mi (8,137.79 km) |
| Sofia to Maumelle (Arkansas) | 5,719.38 mi (9,204.45 km) |
| Sofia to Mayagüez (Puerto Rico) | 5,396.64 mi (8,685.05 km) |
| Sofia to Mayfield Heights (Ohio) | 4,974.35 mi (8,005.44 km) |
| Sofia to Mays Chapel (Maryland) | 4,877.08 mi (7,848.91 km) |
| Sofia to Maywood (California) | 6,606.55 mi (10,632.21 km) |
| Sofia to Maywood (Illinois) | 5,197.33 mi (8,364.30 km) |
| Sofia to McAlester (Oklahoma) | 5,841.03 mi (9,400.22 km) |
| Sofia to McAllen (Texas) | 6,398.73 mi (10,297.77 km) |
| Sofia to McCalla (Alabama) | 5,587.70 mi (8,992.53 km) |
| Sofia to McComb (Mississippi) | 5,829.11 mi (9,381.04 km) |
| Sofia to McDonough (Georgia) | 5,463.67 mi (8,792.93 km) |
| Sofia to McFarland (California) | 6,529.64 mi (10,508.44 km) |
| Sofia to McHenry (Illinois) | 5,191.22 mi (8,354.47 km) |
