| Glenn Dale to Marsala | 4,616.36 mi (7,429.32 km) |
| Glenn Dale to Marsciano | 4,428.26 mi (7,126.60 km) |
| Glenn Dale to Martano | 4,789.19 mi (7,707.45 km) |
| Glenn Dale to Martellago | 4,330.91 mi (6,969.93 km) |
| Glenn Dale to Martina Franca | 4,727.73 mi (7,608.55 km) |
| Glenn Dale to Martinengo | 4,228.36 mi (6,804.89 km) |
| Glenn Dale to Martinsicuro | 4,498.40 mi (7,239.47 km) |
| Glenn Dale to Mascali | 4,745.02 mi (7,636.37 km) |
| Glenn Dale to Mascalucia | 4,745.16 mi (7,636.61 km) |
| Glenn Dale to Masera di Padova | 4,326.27 mi (6,962.46 km) |
| Glenn Dale to Maserada sul Piave | 4,330.83 mi (6,969.80 km) |
| Glenn Dale to Massa | 4,294.29 mi (6,910.99 km) |
| Glenn Dale to Massa Lombarda | 4,353.27 mi (7,005.91 km) |
| Glenn Dale to Massafra | 4,722.71 mi (7,600.47 km) |
| Glenn Dale to Massalubrense | 4,599.43 mi (7,402.07 km) |
