| Castle Rock to Gonzalez (Florida) | 1,162.08 mi (1,870.18 km) |
| Castle Rock to Goodlettsville (Tennessee) | 1,010.43 mi (1,626.13 km) |
| Castle Rock to Goodyear (Arizona) | 593.90 mi (955.79 km) |
| Castle Rock to Goose Creek (South Carolina) | 1,448.75 mi (2,331.54 km) |
| Castle Rock to Goshen (Indiana) | 1,009.15 mi (1,624.06 km) |
| Castle Rock to Goulds (Florida) | 1,707.07 mi (2,747.27 km) |
| Castle Rock to Grafton (Wisconsin) | 916.36 mi (1,474.73 km) |
| Castle Rock to Graham (North Carolina) | 1,405.68 mi (2,262.22 km) |
| Castle Rock to Graham (Washington) | 1,021.45 mi (1,643.86 km) |
| Castle Rock to Grain Valley (Missouri) | 570.21 mi (917.67 km) |
| Castle Rock to Granbury (Texas) | 621.08 mi (999.53 km) |
| Castle Rock to Grand Forks (North Dakota) | 705.79 mi (1,135.86 km) |
| Castle Rock to Grand Haven (Michigan) | 998.93 mi (1,607.62 km) |
| Castle Rock to Grand Island (Nebraska) | 359.15 mi (577.99 km) |
| Castle Rock to Grand Junction (Colorado) | 199.74 mi (321.45 km) |
