| Glenmont to Candler-McAfee (Georgia) | 545.33 mi (877.62 km) |
| Glenmont to Caño Martin Peña (Puerto Rico) | 1,570.88 mi (2,528.09 km) |
| Glenmont to Cañon City (Colorado) | 1,512.52 mi (2,434.16 km) |
| Glenmont to Canóvanas (Puerto Rico) | 1,578.59 mi (2,540.50 km) |
| Glenmont to Canton (Georgia) | 529.99 mi (852.94 km) |
| Glenmont to Canton (Illinois) | 696.63 mi (1,121.11 km) |
| Glenmont to Canton (Mississippi) | 852.53 mi (1,372.02 km) |
| Glenmont to Canton (Ohio) | 258.45 mi (415.93 km) |
| Glenmont to Canyon (Texas) | 1,395.92 mi (2,246.51 km) |
| Glenmont to Canyon Lake (California) | 2,249.20 mi (3,619.74 km) |
| Glenmont to Canyon Lake (Texas) | 1,360.41 mi (2,189.36 km) |
| Glenmont to Cape Coral (Florida) | 904.89 mi (1,456.27 km) |
| Glenmont to Cape Girardeau (Missouri) | 689.71 mi (1,109.98 km) |
| Glenmont to Carbondale (Illinois) | 665.42 mi (1,070.89 km) |
| Glenmont to Carlisle (Pennsylvania) | 78.53 mi (126.39 km) |
