| Williamsport to Maryland Heights (Missouri) | 731.65 mi (1,177.47 km) |
| Williamsport to Marysville (California) | 2,329.59 mi (3,749.11 km) |
| Williamsport to Marysville (Ohio) | 338.24 mi (544.34 km) |
| Williamsport to Marysville (Washington) | 2,233.64 mi (3,594.70 km) |
| Williamsport to Maryville (Missouri) | 933.27 mi (1,501.95 km) |
| Williamsport to Maryville (Tennessee) | 533.48 mi (858.55 km) |
| Williamsport to Mason (Ohio) | 404.20 mi (650.50 km) |
| Williamsport to Mason City (Iowa) | 836.44 mi (1,346.13 km) |
| Williamsport to Massapequa (New York) | 190.24 mi (306.16 km) |
| Williamsport to Massapequa Park (New York) | 191.09 mi (307.54 km) |
| Williamsport to Massillon (Ohio) | 236.09 mi (379.95 km) |
| Williamsport to Mastic (New York) | 220.35 mi (354.62 km) |
| Williamsport to Mastic Beach (New York) | 221.41 mi (356.33 km) |
| Williamsport to Matteson (Illinois) | 555.24 mi (893.57 km) |
| Williamsport to Matthews (North Carolina) | 467.45 mi (752.29 km) |
