| Castle Rock to Lomita (California) | 839.47 mi (1,350.99 km) |
| Castle Rock to Lompoc (California) | 919.58 mi (1,479.92 km) |
| Castle Rock to London (Ohio) | 1,137.39 mi (1,830.44 km) |
| Castle Rock to Lone Tree (Colorado) | 10.72 mi (17.26 km) |
| Castle Rock to Long Beach (California) | 831.93 mi (1,338.85 km) |
| Castle Rock to Long Beach (Mississippi) | 1,083.20 mi (1,743.25 km) |
| Castle Rock to Long Beach (New York) | 1,644.62 mi (2,646.76 km) |
| Castle Rock to Long Branch (New Jersey) | 1,630.32 mi (2,623.75 km) |
| Castle Rock to Longmont (Colorado) | 56.29 mi (90.59 km) |
| Castle Rock to Longview (Texas) | 736.07 mi (1,184.59 km) |
| Castle Rock to Longview (Washington) | 1,027.60 mi (1,653.76 km) |
| Castle Rock to Longwood (Florida) | 1,527.93 mi (2,458.97 km) |
| Castle Rock to Lorain (Ohio) | 1,197.68 mi (1,927.48 km) |
| Castle Rock to Lorton (Virginia) | 1,478.15 mi (2,378.85 km) |
| Castle Rock to Los Alamitos (California) | 826.67 mi (1,330.40 km) |
