| Portage to Maryland Heights (Missouri) | 351.71 mi (566.02 km) |
| Portage to Marysville (California) | 1,883.70 mi (3,031.53 km) |
| Portage to Marysville (Ohio) | 178.91 mi (287.93 km) |
| Portage to Marysville (Washington) | 1,809.64 mi (2,912.34 km) |
| Portage to Maryville (Missouri) | 498.39 mi (802.09 km) |
| Portage to Maryville (Tennessee) | 454.17 mi (730.92 km) |
| Portage to Mason (Ohio) | 207.66 mi (334.20 km) |
| Portage to Mason City (Iowa) | 391.91 mi (630.71 km) |
| Portage to Massapequa (New York) | 636.12 mi (1,023.74 km) |
| Portage to Massapequa Park (New York) | 636.96 mi (1,025.09 km) |
| Portage to Massillon (Ohio) | 232.00 mi (373.37 km) |
| Portage to Mastic (New York) | 665.67 mi (1,071.30 km) |
| Portage to Mastic Beach (New York) | 666.89 mi (1,073.25 km) |
| Portage to Matteson (Illinois) | 120.78 mi (194.38 km) |
| Portage to Matthews (North Carolina) | 555.33 mi (893.72 km) |
