| Duchcov to Oak Harbor (Washington) | 5,130.82 mi (8,257.26 km) |
| Duchcov to Oak Hills (Oregon) | 5,305.16 mi (8,537.84 km) |
| Duchcov to Oak Lawn (Illinois) | 4,503.51 mi (7,247.71 km) |
| Duchcov to Oak Park (California) | 5,903.71 mi (9,501.11 km) |
| Duchcov to Oak Park (Illinois) | 4,496.11 mi (7,235.78 km) |
| Duchcov to Oak Park (Michigan) | 4,302.69 mi (6,924.51 km) |
| Duchcov to Oak Ridge (Florida) | 4,936.41 mi (7,944.39 km) |
| Duchcov to Oak Ridge (New Jersey) | 4,044.31 mi (6,508.70 km) |
| Duchcov to Oak Ridge (Tennessee) | 4,666.80 mi (7,510.49 km) |
| Duchcov to Oakdale (California) | 5,738.34 mi (9,234.96 km) |
| Duchcov to Oakdale (Minnesota) | 4,514.49 mi (7,265.37 km) |
| Duchcov to Oakland (California) | 5,770.21 mi (9,286.26 km) |
| Duchcov to Oakland (New Jersey) | 4,034.42 mi (6,492.77 km) |
| Duchcov to Oakland Park (Florida) | 5,003.11 mi (8,051.73 km) |
| Duchcov to Oakleaf Plantation (Florida) | 4,866.05 mi (7,831.15 km) |
