| Pittsburgh to Marrero (Louisiana) | 925.65 mi (1,489.68 km) |
| Pittsburgh to Marshall (Minnesota) | 850.87 mi (1,369.34 km) |
| Pittsburgh to Marshall (Missouri) | 707.50 mi (1,138.62 km) |
| Pittsburgh to Marshall (Texas) | 965.37 mi (1,553.61 km) |
| Pittsburgh to Marshalltown (Iowa) | 680.13 mi (1,094.56 km) |
| Pittsburgh to Marshfield (Wisconsin) | 594.76 mi (957.17 km) |
| Pittsburgh to Martha Lake (Washington) | 2,128.33 mi (3,425.22 km) |
| Pittsburgh to Martin (Tennessee) | 557.53 mi (897.26 km) |
| Pittsburgh to Martinez (California) | 2,240.60 mi (3,605.89 km) |
| Pittsburgh to Martinez (Georgia) | 492.14 mi (792.02 km) |
| Pittsburgh to Martinsburg (West Virginia) | 125.72 mi (202.33 km) |
| Pittsburgh to Martinsville (Indiana) | 349.20 mi (561.98 km) |
| Pittsburgh to Martinsville (New Jersey) | 283.86 mi (456.83 km) |
| Pittsburgh to Martinsville (Virginia) | 259.66 mi (417.89 km) |
| Pittsburgh to Maryland City (Maryland) | 192.10 mi (309.16 km) |
