| McKeesport to Maryland Heights (Missouri) | 577.14 mi (928.82 km) |
| McKeesport to Marysville (California) | 2,198.16 mi (3,537.60 km) |
| McKeesport to Marysville (Ohio) | 185.45 mi (298.45 km) |
| McKeesport to Marysville (Washington) | 2,133.66 mi (3,433.79 km) |
| McKeesport to Maryville (Missouri) | 790.36 mi (1,271.96 km) |
| McKeesport to Maryville (Tennessee) | 389.02 mi (626.06 km) |
| McKeesport to Mason (Ohio) | 246.05 mi (395.98 km) |
| McKeesport to Mason City (Iowa) | 714.41 mi (1,149.73 km) |
| McKeesport to Massapequa (New York) | 335.51 mi (539.95 km) |
| McKeesport to Massapequa Park (New York) | 336.64 mi (541.77 km) |
| McKeesport to Massillon (Ohio) | 93.39 mi (150.29 km) |
| McKeesport to Mastic (New York) | 368.47 mi (593.00 km) |
| McKeesport to Mastic Beach (New York) | 368.92 mi (593.72 km) |
| McKeesport to Matteson (Illinois) | 420.21 mi (676.27 km) |
| McKeesport to Matthews (North Carolina) | 363.91 mi (585.66 km) |
