| Sluis to Oak Harbor (Washington) | 4,852.74 mi (7,809.73 km) |
| Sluis to Oak Hills (Oregon) | 5,019.12 mi (8,077.49 km) |
| Sluis to Oak Lawn (Illinois) | 4,099.31 mi (6,597.20 km) |
| Sluis to Oak Park (California) | 5,568.85 mi (8,962.19 km) |
| Sluis to Oak Park (Illinois) | 4,092.47 mi (6,586.20 km) |
| Sluis to Oak Park (Michigan) | 3,891.30 mi (6,262.44 km) |
| Sluis to Oak Ridge (Florida) | 4,494.28 mi (7,232.85 km) |
| Sluis to Oak Ridge (New Jersey) | 3,614.30 mi (5,816.66 km) |
| Sluis to Oak Ridge (Tennessee) | 4,241.55 mi (6,826.12 km) |
| Sluis to Oakdale (California) | 5,421.45 mi (8,724.97 km) |
| Sluis to Oakdale (Minnesota) | 4,132.37 mi (6,650.41 km) |
| Sluis to Oakland (California) | 5,458.86 mi (8,785.18 km) |
| Sluis to Oakland (New Jersey) | 3,604.02 mi (5,800.11 km) |
| Sluis to Oakland Park (Florida) | 4,557.00 mi (7,333.78 km) |
| Sluis to Oakleaf Plantation (Florida) | 4,426.73 mi (7,124.14 km) |
