| Parkway to Maryland Heights (Missouri) | 1,664.49 mi (2,678.73 km) |
| Parkway to Marysville (California) | 45.64 mi (73.44 km) |
| Parkway to Marysville (Ohio) | 2,022.69 mi (3,255.21 km) |
| Parkway to Marysville (Washington) | 662.96 mi (1,066.94 km) |
| Parkway to Maryville (Missouri) | 1,419.14 mi (2,283.89 km) |
| Parkway to Maryville (Tennessee) | 2,058.94 mi (3,313.54 km) |
| Parkway to Mason (Ohio) | 1,983.49 mi (3,192.12 km) |
| Parkway to Mason City (Iowa) | 1,504.06 mi (2,420.56 km) |
| Parkway to Massapequa (New York) | 2,527.49 mi (4,067.59 km) |
| Parkway to Massapequa Park (New York) | 2,528.35 mi (4,068.98 km) |
| Parkway to Massillon (Ohio) | 2,111.82 mi (3,398.64 km) |
| Parkway to Mastic (New York) | 2,557.12 mi (4,115.29 km) |
| Parkway to Mastic Beach (New York) | 2,558.35 mi (4,117.26 km) |
| Parkway to Matteson (Illinois) | 1,784.54 mi (2,871.94 km) |
| Parkway to Matthews (North Carolina) | 2,247.48 mi (3,616.98 km) |
