| Pittsburgh to Melzo | 4,289.04 mi (6,902.54 km) |
| Pittsburgh to Mendicino | 4,814.80 mi (7,748.68 km) |
| Pittsburgh to Menfi | 4,739.86 mi (7,628.07 km) |
| Pittsburgh to Mentana | 4,553.55 mi (7,328.23 km) |
| Pittsburgh to Merano | 4,319.53 mi (6,951.61 km) |
| Pittsburgh to Merate | 4,282.72 mi (6,892.37 km) |
| Pittsburgh to Mercato San Severino | 4,692.20 mi (7,551.37 km) |
| Pittsburgh to Mercogliano | 4,685.63 mi (7,540.80 km) |
| Pittsburgh to Mesagne | 4,829.84 mi (7,772.87 km) |
| Pittsburgh to Messina | 4,830.62 mi (7,774.12 km) |
| Pittsburgh to Mestre | 4,406.16 mi (7,091.03 km) |
| Pittsburgh to Mestrino | 4,388.25 mi (7,062.21 km) |
| Pittsburgh to Milan | 4,280.73 mi (6,889.18 km) |
| Pittsburgh to Milazzo | 4,815.76 mi (7,750.21 km) |
| Pittsburgh to Minerbio | 4,406.41 mi (7,091.43 km) |
