| Gladbeck to Oak Harbor (Washington) | 4,923.76 mi (7,924.02 km) |
| Gladbeck to Oak Hills (Oregon) | 5,093.42 mi (8,197.06 km) |
| Gladbeck to Oak Lawn (Illinois) | 4,222.60 mi (6,795.63 km) |
| Gladbeck to Oak Park (California) | 5,663.05 mi (9,113.81 km) |
| Gladbeck to Oak Park (Illinois) | 4,215.50 mi (6,784.19 km) |
| Gladbeck to Oak Park (Michigan) | 4,017.93 mi (6,466.23 km) |
| Gladbeck to Oak Ridge (Florida) | 4,637.30 mi (7,463.01 km) |
| Gladbeck to Oak Ridge (New Jersey) | 3,750.28 mi (6,035.49 km) |
| Gladbeck to Oak Ridge (Tennessee) | 4,375.18 mi (7,041.17 km) |
| Gladbeck to Oakdale (California) | 5,508.30 mi (8,864.76 km) |
| Gladbeck to Oakdale (Minnesota) | 4,245.62 mi (6,832.67 km) |
| Gladbeck to Oakland (California) | 5,543.54 mi (8,921.47 km) |
| Gladbeck to Oakland (New Jersey) | 3,740.20 mi (6,019.28 km) |
| Gladbeck to Oakland Park (Florida) | 4,702.60 mi (7,568.11 km) |
| Gladbeck to Oakleaf Plantation (Florida) | 4,568.05 mi (7,351.56 km) |
