| Glenn Dale to Melzo | 4,215.58 mi (6,784.32 km) |
| Glenn Dale to Mendicino | 4,732.23 mi (7,615.78 km) |
| Glenn Dale to Menfi | 4,648.07 mi (7,480.35 km) |
| Glenn Dale to Mentana | 4,473.72 mi (7,199.75 km) |
| Glenn Dale to Merano | 4,251.91 mi (6,842.80 km) |
| Glenn Dale to Merate | 4,209.91 mi (6,775.20 km) |
| Glenn Dale to Mercato San Severino | 4,611.78 mi (7,421.94 km) |
| Glenn Dale to Mercogliano | 4,605.57 mi (7,411.95 km) |
| Glenn Dale to Mesagne | 4,753.21 mi (7,649.55 km) |
| Glenn Dale to Messina | 4,744.19 mi (7,635.04 km) |
| Glenn Dale to Mestre | 4,336.21 mi (6,978.45 km) |
| Glenn Dale to Mestrino | 4,317.57 mi (6,948.46 km) |
| Glenn Dale to Milan | 4,206.89 mi (6,770.34 km) |
| Glenn Dale to Milazzo | 4,728.93 mi (7,610.47 km) |
| Glenn Dale to Minerbio | 4,332.79 mi (6,972.95 km) |
