| Glenmont to Ridgeland (Mississippi) | 865.03 mi (1,392.13 km) |
| Glenmont to Ridgewood (New Jersey) | 203.83 mi (328.03 km) |
| Glenmont to Rifle (Colorado) | 1,635.05 mi (2,631.36 km) |
| Glenmont to Rincon (Georgia) | 523.66 mi (842.75 km) |
| Glenmont to Ringwood (New Jersey) | 203.13 mi (326.90 km) |
| Glenmont to Río Grande (Puerto Rico) | 1,579.56 mi (2,542.05 km) |
| Glenmont to Rio Grande City (Texas) | 1,533.04 mi (2,467.18 km) |
| Glenmont to Rio Linda (California) | 2,363.69 mi (3,804.00 km) |
| Glenmont to Rio Rancho (New Mexico) | 1,645.64 mi (2,648.41 km) |
| Glenmont to Rio Rico (Arizona) | 1,972.01 mi (3,173.64 km) |
| Glenmont to Ripon (California) | 2,365.01 mi (3,806.11 km) |
| Glenmont to River Edge (New Jersey) | 204.46 mi (329.05 km) |
| Glenmont to River Falls (Wisconsin) | 892.72 mi (1,436.70 km) |
| Glenmont to River Forest (Illinois) | 598.34 mi (962.93 km) |
| Glenmont to River Grove (Illinois) | 599.80 mi (965.28 km) |
