| Groningen to Oak Harbor (Washington) | 4,819.00 mi (7,755.44 km) |
| Groningen to Oak Hills (Oregon) | 4,989.79 mi (8,030.28 km) |
| Groningen to Oak Lawn (Illinois) | 4,148.95 mi (6,677.09 km) |
| Groningen to Oak Park (California) | 5,568.09 mi (8,960.98 km) |
| Groningen to Oak Park (Illinois) | 4,141.60 mi (6,665.26 km) |
| Groningen to Oak Park (Michigan) | 3,947.67 mi (6,353.16 km) |
| Groningen to Oak Ridge (Florida) | 4,587.82 mi (7,383.38 km) |
| Groningen to Oak Ridge (New Jersey) | 3,690.96 mi (5,940.03 km) |
| Groningen to Oak Ridge (Tennessee) | 4,312.41 mi (6,940.16 km) |
| Groningen to Oakdale (California) | 5,409.75 mi (8,706.16 km) |
| Groningen to Oakdale (Minnesota) | 4,163.49 mi (6,700.49 km) |
| Groningen to Oakland (California) | 5,443.99 mi (8,761.25 km) |
| Groningen to Oakland (New Jersey) | 3,681.16 mi (5,924.26 km) |
| Groningen to Oakland Park (Florida) | 4,657.81 mi (7,496.03 km) |
| Groningen to Oakleaf Plantation (Florida) | 4,515.80 mi (7,267.48 km) |
