| Pittsburgh to Mirfield | 3,600.47 mi (5,794.40 km) |
| Pittsburgh to Mitcham | 3,716.17 mi (5,980.59 km) |
| Pittsburgh to Mold | 3,555.77 mi (5,722.46 km) |
| Pittsburgh to Molesey | 3,707.70 mi (5,966.97 km) |
| Pittsburgh to Monkseaton | 3,578.92 mi (5,759.72 km) |
| Pittsburgh to Monmouth | 3,603.12 mi (5,798.67 km) |
| Pittsburgh to Montrose | 3,507.28 mi (5,644.43 km) |
| Pittsburgh to Morden | 3,714.42 mi (5,977.79 km) |
| Pittsburgh to Morecambe | 3,546.22 mi (5,707.08 km) |
| Pittsburgh to Moreton | 3,551.46 mi (5,715.52 km) |
| Pittsburgh to Morley | 3,602.26 mi (5,797.27 km) |
| Pittsburgh to Morpeth | 3,567.53 mi (5,741.38 km) |
| Pittsburgh to Morriston | 3,557.36 mi (5,725.02 km) |
| Pittsburgh to Mosbrough | 3,621.32 mi (5,827.95 km) |
| Pittsburgh to Mossley | 3,590.69 mi (5,778.65 km) |
