| Glenmont to Cadillac (Michigan) | 560.50 mi (902.03 km) |
| Glenmont to Caguas (Puerto Rico) | 1,583.89 mi (2,549.02 km) |
| Glenmont to Cahokia (Illinois) | 707.22 mi (1,138.17 km) |
| Glenmont to Calabasas (California) | 2,313.33 mi (3,722.95 km) |
| Glenmont to Caldwell (Idaho) | 2,058.66 mi (3,313.09 km) |
| Glenmont to Caledonia (Wisconsin) | 620.59 mi (998.74 km) |
| Glenmont to Calera (Alabama) | 678.91 mi (1,092.60 km) |
| Glenmont to Calexico (California) | 2,180.41 mi (3,509.03 km) |
| Glenmont to Calhoun (Georgia) | 538.93 mi (867.32 km) |
| Glenmont to California (Maryland) | 61.14 mi (98.39 km) |
| Glenmont to California City (California) | 2,246.65 mi (3,615.63 km) |
| Glenmont to Callaway (Florida) | 783.62 mi (1,261.11 km) |
| Glenmont to Calumet City (Illinois) | 579.96 mi (933.36 km) |
| Glenmont to Calverton (Maryland) | 5.32 mi (8.56 km) |
| Glenmont to Camano (Washington) | 2,320.67 mi (3,734.76 km) |
