| Pittsburgh to Montijo | 3,783.49 mi (6,088.93 km) |
| Pittsburgh to Montilla | 3,921.33 mi (6,310.77 km) |
| Pittsburgh to Montmelo | 4,112.12 mi (6,617.81 km) |
| Pittsburgh to Montornes del Valles | 4,113.23 mi (6,619.60 km) |
| Pittsburgh to Montoro | 3,919.19 mi (6,307.33 km) |
| Pittsburgh to Monzon | 4,007.00 mi (6,448.65 km) |
| Pittsburgh to Mora | 3,894.37 mi (6,267.38 km) |
| Pittsburgh to Moralzarzal | 3,854.16 mi (6,202.68 km) |
| Pittsburgh to Moron de la Frontera | 3,896.85 mi (6,271.38 km) |
| Pittsburgh to Mostoles | 3,869.64 mi (6,227.59 km) |
| Pittsburgh to Motril | 4,002.92 mi (6,442.08 km) |
| Pittsburgh to Muchamiel | 4,093.34 mi (6,587.59 km) |
| Pittsburgh to Mula | 4,056.47 mi (6,528.26 km) |
| Pittsburgh to Munguia | 3,824.24 mi (6,154.52 km) |
| Pittsburgh to Murcia | 4,075.46 mi (6,558.82 km) |
