| Glenn Dale to Montevarchi | 4,373.87 mi (7,039.06 km) |
| Glenn Dale to Monticello Conte Otto | 4,304.81 mi (6,927.91 km) |
| Glenn Dale to Montichiari | 4,260.08 mi (6,855.93 km) |
| Glenn Dale to Montignoso | 4,296.30 mi (6,914.22 km) |
| Glenn Dale to Montopoli in Val d'Arno | 4,333.43 mi (6,973.98 km) |
| Glenn Dale to Monza | 4,206.77 mi (6,770.14 km) |
| Glenn Dale to Morbegno | 4,201.84 mi (6,762.21 km) |
| Glenn Dale to Mori | 4,271.13 mi (6,873.72 km) |
| Glenn Dale to Morlupo | 4,462.84 mi (7,182.24 km) |
| Glenn Dale to Morrovalle | 4,468.60 mi (7,191.52 km) |
| Glenn Dale to Mortara | 4,194.81 mi (6,750.89 km) |
| Glenn Dale to Mosciano Sant'Angelo | 4,501.70 mi (7,244.78 km) |
| Glenn Dale to Motta di Livenza | 4,342.14 mi (6,987.99 km) |
| Glenn Dale to Motta Sant'Anastasia | 4,743.90 mi (7,634.57 km) |
| Glenn Dale to Mottola | 4,717.15 mi (7,591.53 km) |
