| Glenmont to Cibolo (Texas) | 1,369.98 mi (2,204.77 km) |
| Glenmont to Cicero (Illinois) | 594.43 mi (956.64 km) |
| Glenmont to Cimarron Hills (Colorado) | 1,479.87 mi (2,381.61 km) |
| Glenmont to Cincinnati (Ohio) | 399.85 mi (643.50 km) |
| Glenmont to Cinco Ranch (Texas) | 1,242.73 mi (1,999.98 km) |
| Glenmont to Circleville (Ohio) | 316.69 mi (509.67 km) |
| Glenmont to Citrus (California) | 2,272.16 mi (3,656.69 km) |
| Glenmont to Citrus Heights (California) | 2,355.55 mi (3,790.90 km) |
| Glenmont to Citrus Park (Florida) | 823.04 mi (1,324.56 km) |
| Glenmont to Claiborne (Louisiana) | 959.73 mi (1,544.54 km) |
| Glenmont to Claremont (California) | 2,262.62 mi (3,641.34 km) |
| Glenmont to Claremont (New Hampshire) | 385.29 mi (620.06 km) |
| Glenmont to Claremore (Oklahoma) | 1,030.69 mi (1,658.74 km) |
| Glenmont to Clarksburg (Maryland) | 15.89 mi (25.57 km) |
| Glenmont to Clarksburg (West Virginia) | 176.12 mi (283.43 km) |
