| Parkway to Mattoon (Illinois) | 1,768.33 mi (2,845.85 km) |
| Parkway to Mauldin (South Carolina) | 2,169.18 mi (3,490.96 km) |
| Parkway to Maumee (Ohio) | 1,994.29 mi (3,209.50 km) |
| Parkway to Maumelle (Arkansas) | 1,622.62 mi (2,611.35 km) |
| Parkway to Mayagüez (Puerto Rico) | 3,529.75 mi (5,680.58 km) |
| Parkway to Mayfield Heights (Ohio) | 2,108.14 mi (3,392.72 km) |
| Parkway to Mays Chapel (Maryland) | 2,382.42 mi (3,834.13 km) |
| Parkway to Maywood (California) | 360.79 mi (580.64 km) |
| Parkway to Maywood (Illinois) | 1,777.68 mi (2,860.89 km) |
| Parkway to McAlester (Oklahoma) | 1,438.72 mi (2,315.39 km) |
| Parkway to McAllen (Texas) | 1,590.77 mi (2,560.09 km) |
| Parkway to McCalla (Alabama) | 1,948.00 mi (3,135.00 km) |
| Parkway to McComb (Mississippi) | 1,816.67 mi (2,923.64 km) |
| Parkway to McDonough (Georgia) | 2,100.36 mi (3,380.20 km) |
| Parkway to McFarland (California) | 229.86 mi (369.92 km) |
