| Castle Rock to Gages Lake (Illinois) | 903.55 mi (1,454.12 km) |
| Castle Rock to Gahanna (Ohio) | 1,166.87 mi (1,877.89 km) |
| Castle Rock to Gainesville (Florida) | 1,440.09 mi (2,317.61 km) |
| Castle Rock to Gainesville (Georgia) | 1,211.36 mi (1,949.49 km) |
| Castle Rock to Gainesville (Texas) | 582.86 mi (938.03 km) |
| Castle Rock to Gainesville (Virginia) | 1,454.79 mi (2,341.26 km) |
| Castle Rock to Gaithersburg (Maryland) | 1,473.07 mi (2,370.68 km) |
| Castle Rock to Galena Park (Texas) | 860.53 mi (1,384.89 km) |
| Castle Rock to Galesburg (Illinois) | 771.20 mi (1,241.13 km) |
| Castle Rock to Galion (Ohio) | 1,168.08 mi (1,879.84 km) |
| Castle Rock to Gallatin (Tennessee) | 1,021.86 mi (1,644.52 km) |
| Castle Rock to Gallup (New Mexico) | 341.36 mi (549.37 km) |
| Castle Rock to Galt (California) | 887.39 mi (1,428.11 km) |
| Castle Rock to Galveston (Texas) | 900.35 mi (1,448.97 km) |
| Castle Rock to Gantt (South Carolina) | 1,273.89 mi (2,050.12 km) |
