| Sluis to Odessa (Texas) | 5,143.06 mi (8,276.95 km) |
| Sluis to Ogden (Utah) | 4,957.80 mi (7,978.80 km) |
| Sluis to Oildale (California) | 5,504.31 mi (8,858.34 km) |
| Sluis to Ojus (Florida) | 4,568.56 mi (7,352.39 km) |
| Sluis to Okemos (Michigan) | 3,927.10 mi (6,320.06 km) |
| Sluis to Oklahoma City (Oklahoma) | 4,774.85 mi (7,684.38 km) |
| Sluis to Okmulgee (Oklahoma) | 4,711.32 mi (7,582.13 km) |
| Sluis to Olathe (Kansas) | 4,500.29 mi (7,242.52 km) |
| Sluis to Old Jamestown (Missouri) | 4,333.61 mi (6,974.28 km) |
| Sluis to Oldsmar (Florida) | 4,567.73 mi (7,351.05 km) |
| Sluis to Olean (New York) | 3,724.46 mi (5,993.95 km) |
| Sluis to Olive Branch (Mississippi) | 4,509.64 mi (7,257.57 km) |
| Sluis to Olivehurst (California) | 5,364.23 mi (8,632.89 km) |
| Sluis to Olney (Maryland) | 3,802.35 mi (6,119.29 km) |
| Sluis to Olympia (Washington) | 4,932.54 mi (7,938.16 km) |
