| Castle Rock to Florence (South Carolina) | 1,427.69 mi (2,297.65 km) |
| Castle Rock to Florence-Graham (California) | 829.67 mi (1,335.23 km) |
| Castle Rock to Florham Park (New Jersey) | 1,605.11 mi (2,583.18 km) |
| Castle Rock to Florida (Puerto Rico) | 2,703.90 mi (4,351.51 km) |
| Castle Rock to Florida City (Florida) | 1,708.56 mi (2,749.67 km) |
| Castle Rock to Florida Ridge (Florida) | 1,620.84 mi (2,608.49 km) |
| Castle Rock to Florin (California) | 890.47 mi (1,433.08 km) |
| Castle Rock to Florissant (Missouri) | 779.22 mi (1,254.03 km) |
| Castle Rock to Flower Hill (Maryland) | 1,474.32 mi (2,372.69 km) |
| Castle Rock to Flower Mound (Texas) | 614.47 mi (988.89 km) |
| Castle Rock to Flowing Wells (Arizona) | 598.34 mi (962.93 km) |
| Castle Rock to Foley (Alabama) | 1,151.82 mi (1,853.67 km) |
| Castle Rock to Folsom (California) | 874.55 mi (1,407.45 km) |
| Castle Rock to Fond du Lac (Wisconsin) | 899.26 mi (1,447.22 km) |
| Castle Rock to Fontana (California) | 786.56 mi (1,265.85 km) |
