| Castleford to Odessa (Texas) | 4,887.29 mi (7,865.33 km) |
| Castleford to Ogden (Utah) | 4,698.48 mi (7,561.48 km) |
| Castleford to Oildale (California) | 5,245.35 mi (8,441.57 km) |
| Castleford to Ojus (Florida) | 4,343.39 mi (6,990.01 km) |
| Castleford to Okemos (Michigan) | 3,674.48 mi (5,913.50 km) |
| Castleford to Oklahoma City (Oklahoma) | 4,519.79 mi (7,273.90 km) |
| Castleford to Okmulgee (Oklahoma) | 4,457.05 mi (7,172.93 km) |
| Castleford to Olathe (Kansas) | 4,244.64 mi (6,831.08 km) |
| Castleford to Old Jamestown (Missouri) | 4,080.60 mi (6,567.09 km) |
| Castleford to Oldsmar (Florida) | 4,335.30 mi (6,977.00 km) |
| Castleford to Olean (New York) | 3,476.92 mi (5,595.56 km) |
| Castleford to Olive Branch (Mississippi) | 4,260.40 mi (6,856.45 km) |
| Castleford to Olivehurst (California) | 5,106.99 mi (8,218.90 km) |
| Castleford to Olney (Maryland) | 3,560.24 mi (5,729.66 km) |
| Castleford to Olympia (Washington) | 4,679.63 mi (7,531.14 km) |
