| Herndon to Mountain Brook (Alabama) | 643.83 mi (1,036.15 km) |
| Herndon to Mountain Home (Arkansas) | 839.30 mi (1,350.73 km) |
| Herndon to Mountain Home (Idaho) | 1,999.09 mi (3,217.22 km) |
| Herndon to Mountain House (California) | 2,369.85 mi (3,813.90 km) |
| Herndon to Mountain Park (Georgia) | 515.47 mi (829.56 km) |
| Herndon to Mountain Top (Pennsylvania) | 168.90 mi (271.82 km) |
| Herndon to Mountain View (California) | 2,405.08 mi (3,870.61 km) |
| Herndon to Mountlake Terrace (Washington) | 2,301.64 mi (3,704.13 km) |
| Herndon to Mukilteo (Washington) | 2,301.24 mi (3,703.49 km) |
| Herndon to Muncie (Indiana) | 434.65 mi (699.49 km) |
| Herndon to Mundelein (Illinois) | 601.44 mi (967.93 km) |
| Herndon to Munhall (Pennsylvania) | 165.95 mi (267.07 km) |
| Herndon to Munster (Indiana) | 561.98 mi (904.42 km) |
| Herndon to Murfreesboro (Tennessee) | 539.90 mi (868.89 km) |
| Herndon to Murphy (Texas) | 1,147.82 mi (1,847.24 km) |
