| Castleford to Orangevale (California) | 5,120.25 mi (8,240.24 km) |
| Castleford to Orchards (Washington) | 4,748.57 mi (7,642.08 km) |
| Castleford to Orcutt (California) | 5,320.14 mi (8,561.94 km) |
| Castleford to Oregon (Ohio) | 3,687.26 mi (5,934.07 km) |
| Castleford to Oregon (Wisconsin) | 3,846.91 mi (6,191.00 km) |
| Castleford to Oregon City (Oregon) | 4,770.34 mi (7,677.12 km) |
| Castleford to Orem (Utah) | 4,741.65 mi (7,630.94 km) |
| Castleford to Orinda (California) | 5,195.08 mi (8,360.67 km) |
| Castleford to Orland Park (Illinois) | 3,854.69 mi (6,203.52 km) |
| Castleford to Orlando (Florida) | 4,259.62 mi (6,855.19 km) |
| Castleford to Ormond Beach (Florida) | 4,207.74 mi (6,771.70 km) |
| Castleford to Oro Valley (Arizona) | 5,158.99 mi (8,302.59 km) |
| Castleford to Oroville (California) | 5,082.60 mi (8,179.65 km) |
| Castleford to Oshkosh (Wisconsin) | 3,764.47 mi (6,058.32 km) |
| Castleford to Oskaloosa (Iowa) | 4,044.39 mi (6,508.82 km) |
