| Castle Rock to Enumclaw (Washington) | 1,014.03 mi (1,631.93 km) |
| Castle Rock to Ephrata (Pennsylvania) | 1,516.88 mi (2,441.18 km) |
| Castle Rock to Erie (Colorado) | 46.94 mi (75.55 km) |
| Castle Rock to Erie (Pennsylvania) | 1,306.18 mi (2,102.09 km) |
| Castle Rock to Erlanger (Kentucky) | 1,083.28 mi (1,743.38 km) |
| Castle Rock to Escanaba (Michigan) | 1,002.50 mi (1,613.37 km) |
| Castle Rock to Escondido (California) | 804.75 mi (1,295.12 km) |
| Castle Rock to Española (New Mexico) | 242.26 mi (389.87 km) |
| Castle Rock to Essex (Maryland) | 1,511.75 mi (2,432.93 km) |
| Castle Rock to Essex Junction (Vermont) | 1,658.17 mi (2,668.57 km) |
| Castle Rock to Estelle (Louisiana) | 1,064.04 mi (1,712.41 km) |
| Castle Rock to Estero (Florida) | 1,601.64 mi (2,577.59 km) |
| Castle Rock to Euclid (Ohio) | 1,231.97 mi (1,982.67 km) |
| Castle Rock to Eufaula (Alabama) | 1,217.17 mi (1,958.84 km) |
| Castle Rock to Eugene (Oregon) | 993.39 mi (1,598.71 km) |
