| Castle Rock to Emeryville (California) | 946.09 mi (1,522.59 km) |
| Castle Rock to Emmaus (Pennsylvania) | 1,549.64 mi (2,493.90 km) |
| Castle Rock to Emporia (Kansas) | 470.39 mi (757.02 km) |
| Castle Rock to Encinitas (California) | 817.07 mi (1,314.94 km) |
| Castle Rock to Endicott (New York) | 1,511.66 mi (2,432.78 km) |
| Castle Rock to Endwell (New York) | 1,513.75 mi (2,436.14 km) |
| Castle Rock to Englewood (Colorado) | 20.14 mi (32.41 km) |
| Castle Rock to Englewood (Florida) | 1,551.19 mi (2,496.39 km) |
| Castle Rock to Englewood (New Jersey) | 1,626.11 mi (2,616.97 km) |
| Castle Rock to Englewood (Ohio) | 1,091.63 mi (1,756.81 km) |
| Castle Rock to Enid (Oklahoma) | 432.38 mi (695.84 km) |
| Castle Rock to Ennis (Texas) | 669.61 mi (1,077.64 km) |
| Castle Rock to Ensley (Florida) | 1,165.21 mi (1,875.22 km) |
| Castle Rock to Enterprise (Alabama) | 1,203.44 mi (1,936.76 km) |
| Castle Rock to Enterprise (Nevada) | 612.58 mi (985.85 km) |
