| Castleford to Oakley (California) | 5,174.60 mi (8,327.71 km) |
| Castleford to Oakton (Virginia) | 3,581.42 mi (5,763.75 km) |
| Castleford to Oakville (Missouri) | 4,101.52 mi (6,600.76 km) |
| Castleford to Oatfield (Oregon) | 4,766.28 mi (7,670.58 km) |
| Castleford to Ocala (Florida) | 4,256.06 mi (6,849.47 km) |
| Castleford to Ocean Acres (New Jersey) | 3,422.53 mi (5,508.02 km) |
| Castleford to Ocean City (New Jersey) | 3,457.25 mi (5,563.91 km) |
| Castleford to Ocean Pines (Maryland) | 3,520.23 mi (5,665.26 km) |
| Castleford to Ocean Pointe (Hawaii) | 7,069.10 mi (11,376.61 km) |
| Castleford to Ocean Springs (Mississippi) | 4,454.84 mi (7,169.36 km) |
| Castleford to Oceanside (California) | 5,319.85 mi (8,561.47 km) |
| Castleford to Oceanside (New York) | 3,356.28 mi (5,401.41 km) |
| Castleford to Ocoee (Florida) | 4,262.21 mi (6,859.36 km) |
| Castleford to Oconomowoc (Wisconsin) | 3,806.07 mi (6,125.27 km) |
| Castleford to Odenton (Maryland) | 3,549.19 mi (5,711.86 km) |
