| Parkway to McHenry (Illinois) | 1,752.96 mi (2,821.12 km) |
| Parkway to McKeesport (Pennsylvania) | 2,203.96 mi (3,546.93 km) |
| Parkway to McKinleyville (California) | 219.59 mi (353.40 km) |
| Parkway to McKinney (Texas) | 1,430.63 mi (2,302.38 km) |
| Parkway to McLean (Virginia) | 2,361.95 mi (3,801.19 km) |
| Parkway to McMinnville (Oregon) | 472.26 mi (760.04 km) |
| Parkway to McMinnville (Tennessee) | 1,963.21 mi (3,159.48 km) |
| Parkway to McNair (Virginia) | 2,350.48 mi (3,782.73 km) |
| Parkway to McPherson (Kansas) | 1,284.05 mi (2,066.48 km) |
| Parkway to Mead Valley (California) | 397.33 mi (639.44 km) |
| Parkway to Meadow Woods (Florida) | 2,395.12 mi (3,854.58 km) |
| Parkway to Meadowbrook (Virginia) | 2,373.61 mi (3,819.96 km) |
| Parkway to Meadville (Pennsylvania) | 2,173.76 mi (3,498.33 km) |
| Parkway to Mebane (North Carolina) | 2,304.17 mi (3,708.20 km) |
| Parkway to Mechanicsville (Virginia) | 2,376.21 mi (3,824.15 km) |
