| Pittsburgh to Masanasa | 4,062.02 mi (6,537.19 km) |
| Pittsburgh to Masquefa | 4,094.05 mi (6,588.74 km) |
| Pittsburgh to Matadepera | 4,100.27 mi (6,598.75 km) |
| Pittsburgh to Mazarron | 4,079.91 mi (6,565.98 km) |
| Pittsburgh to Meco | 3,888.04 mi (6,257.19 km) |
| Pittsburgh to Medina del Campo | 3,790.73 mi (6,100.58 km) |
| Pittsburgh to Medina Sidonia | 3,895.76 mi (6,269.61 km) |
| Pittsburgh to Mejorada del Campo | 3,890.19 mi (6,260.66 km) |
| Pittsburgh to Meliana | 4,060.37 mi (6,534.53 km) |
| Pittsburgh to Mengibar | 3,948.33 mi (6,354.22 km) |
| Pittsburgh to Merida | 3,797.43 mi (6,111.38 km) |
| Pittsburgh to Miajadas | 3,802.40 mi (6,119.37 km) |
| Pittsburgh to Mieres | 3,693.70 mi (5,944.43 km) |
| Pittsburgh to Miguelturra | 3,909.12 mi (6,291.13 km) |
| Pittsburgh to Mijas | 3,953.84 mi (6,363.09 km) |
