| Williamsport to Marrero (Louisiana) | 1,072.43 mi (1,725.91 km) |
| Williamsport to Marshall (Minnesota) | 973.18 mi (1,566.18 km) |
| Williamsport to Marshall (Missouri) | 864.54 mi (1,391.34 km) |
| Williamsport to Marshall (Texas) | 1,126.86 mi (1,813.51 km) |
| Williamsport to Marshalltown (Iowa) | 820.14 mi (1,319.89 km) |
| Williamsport to Marshfield (Wisconsin) | 704.17 mi (1,133.25 km) |
| Williamsport to Martha Lake (Washington) | 2,238.60 mi (3,602.68 km) |
| Williamsport to Martin (Tennessee) | 719.88 mi (1,158.53 km) |
| Williamsport to Martinez (California) | 2,382.76 mi (3,834.67 km) |
| Williamsport to Martinez (Georgia) | 601.10 mi (967.38 km) |
| Williamsport to Martinsburg (West Virginia) | 132.69 mi (213.55 km) |
| Williamsport to Martinsville (Indiana) | 510.37 mi (821.37 km) |
| Williamsport to Martinsville (New Jersey) | 135.85 mi (218.63 km) |
| Williamsport to Martinsville (Virginia) | 349.53 mi (562.52 km) |
| Williamsport to Maryland City (Maryland) | 148.25 mi (238.58 km) |
