| Pittsburgh to Marly-le-Roi | 3,876.74 mi (6,239.01 km) |
| Pittsburgh to Marmande | 3,924.39 mi (6,315.70 km) |
| Pittsburgh to Maromme | 3,815.95 mi (6,141.17 km) |
| Pittsburgh to Marquette-les-Lille | 3,864.41 mi (6,219.17 km) |
| Pittsburgh to Marseille | 4,192.22 mi (6,746.72 km) |
| Pittsburgh to Martigues | 4,174.41 mi (6,718.06 km) |
| Pittsburgh to Massy | 3,888.00 mi (6,257.14 km) |
| Pittsburgh to Maubeuge | 3,912.14 mi (6,295.99 km) |
| Pittsburgh to Mauguio | 4,121.76 mi (6,633.33 km) |
| Pittsburgh to Mauleon | 3,812.76 mi (6,136.05 km) |
| Pittsburgh to Maurepas | 3,873.61 mi (6,233.98 km) |
| Pittsburgh to Maxeville | 4,047.97 mi (6,514.57 km) |
| Pittsburgh to Mayenne | 3,779.78 mi (6,082.96 km) |
| Pittsburgh to Mazamet | 4,053.84 mi (6,524.02 km) |
| Pittsburgh to Meaux | 3,906.71 mi (6,287.24 km) |
