| Glenmont to Oak Harbor (Washington) | 2,327.96 mi (3,746.49 km) |
| Glenmont to Oak Hills (Oregon) | 2,349.50 mi (3,781.16 km) |
| Glenmont to Oak Lawn (Illinois) | 591.79 mi (952.40 km) |
| Glenmont to Oak Park (California) | 2,317.41 mi (3,729.51 km) |
| Glenmont to Oak Park (Illinois) | 596.73 mi (960.35 km) |
| Glenmont to Oak Park (Michigan) | 397.46 mi (639.65 km) |
| Glenmont to Oak Ridge (Florida) | 773.74 mi (1,245.21 km) |
| Glenmont to Oak Ridge (New Jersey) | 191.21 mi (307.73 km) |
| Glenmont to Oak Ridge (Tennessee) | 451.23 mi (726.18 km) |
| Glenmont to Oakdale (California) | 2,349.71 mi (3,781.49 km) |
| Glenmont to Oakdale (Minnesota) | 911.37 mi (1,466.70 km) |
| Glenmont to Oakland (California) | 2,420.96 mi (3,896.17 km) |
| Glenmont to Oakland (New Jersey) | 200.95 mi (323.40 km) |
| Glenmont to Oakland Park (Florida) | 908.72 mi (1,462.44 km) |
| Glenmont to Oakleaf Plantation (Florida) | 672.25 mi (1,081.89 km) |
