| McKeesport to Montijo | 3,779.89 mi (6,083.15 km) |
| McKeesport to Montilla | 3,917.65 mi (6,304.85 km) |
| McKeesport to Montmelo | 4,109.57 mi (6,613.72 km) |
| McKeesport to Montornes del Valles | 4,110.69 mi (6,615.51 km) |
| McKeesport to Montoro | 3,915.60 mi (6,301.56 km) |
| McKeesport to Monzon | 4,004.38 mi (6,444.43 km) |
| McKeesport to Mora | 3,891.10 mi (6,262.12 km) |
| McKeesport to Moralzarzal | 3,851.05 mi (6,197.67 km) |
| McKeesport to Moron de la Frontera | 3,893.04 mi (6,265.24 km) |
| McKeesport to Mostoles | 3,866.48 mi (6,222.50 km) |
| McKeesport to Motril | 3,999.19 mi (6,436.07 km) |
| McKeesport to Muchamiel | 4,090.09 mi (6,582.37 km) |
| McKeesport to Mula | 4,053.09 mi (6,522.82 km) |
| McKeesport to Munguia | 3,821.67 mi (6,150.39 km) |
| McKeesport to Murcia | 4,072.09 mi (6,553.40 km) |
