| Castle Rock to Glen Carbon (Illinois) | 798.00 mi (1,284.26 km) |
| Castle Rock to Glen Cove (New York) | 1,644.17 mi (2,646.04 km) |
| Castle Rock to Glen Ellyn (Illinois) | 895.68 mi (1,441.46 km) |
| Castle Rock to Glen Rock (New Jersey) | 1,617.73 mi (2,603.48 km) |
| Castle Rock to Glendale (Arizona) | 572.69 mi (921.66 km) |
| Castle Rock to Glendale (California) | 822.35 mi (1,323.45 km) |
| Castle Rock to Glendale (Wisconsin) | 914.80 mi (1,472.23 km) |
| Castle Rock to Glendale Heights (Illinois) | 895.24 mi (1,440.75 km) |
| Castle Rock to Glendora (California) | 803.85 mi (1,293.67 km) |
| Castle Rock to Glenmont (Maryland) | 1,482.61 mi (2,386.03 km) |
| Castle Rock to Glenn Dale (Maryland) | 1,496.47 mi (2,408.34 km) |
| Castle Rock to Glenn Heights (Texas) | 649.45 mi (1,045.19 km) |
| Castle Rock to Glenpool (Oklahoma) | 538.46 mi (866.56 km) |
| Castle Rock to Glens Falls (New York) | 1,631.70 mi (2,625.97 km) |
| Castle Rock to Glenvar Heights (Florida) | 1,704.00 mi (2,742.33 km) |
