| Castle Rock to Germantown (Wisconsin) | 906.61 mi (1,459.05 km) |
| Castle Rock to Gibsonton (Florida) | 1,513.36 mi (2,435.52 km) |
| Castle Rock to Gig Harbor (Washington) | 1,043.66 mi (1,679.62 km) |
| Castle Rock to Gilbert (Arizona) | 567.81 mi (913.81 km) |
| Castle Rock to Gillette (Wyoming) | 340.10 mi (547.34 km) |
| Castle Rock to Gilroy (California) | 921.87 mi (1,483.61 km) |
| Castle Rock to Gladeview (Florida) | 1,702.03 mi (2,739.16 km) |
| Castle Rock to Gladstone (Missouri) | 550.26 mi (885.57 km) |
| Castle Rock to Gladstone (Oregon) | 993.26 mi (1,598.50 km) |
| Castle Rock to Glasgow (Delaware) | 1,545.25 mi (2,486.84 km) |
| Castle Rock to Glasgow (Kentucky) | 1,038.83 mi (1,671.83 km) |
| Castle Rock to Glassboro (New Jersey) | 1,577.63 mi (2,538.95 km) |
| Castle Rock to Glassmanor (Maryland) | 1,488.99 mi (2,396.30 km) |
| Castle Rock to Glen Allen (Virginia) | 1,478.57 mi (2,379.53 km) |
| Castle Rock to Glen Burnie (Maryland) | 1,504.85 mi (2,421.82 km) |
