Castle Lake   Be the first to submit input for Castle Lake. If you have info on Castle Lake, Front Range, Boulder County, Colorado please submit it here to improve this web site.          These outdoors activities are available near Castle Lake.   Lakes Near Castle Lake: Watanga Lake, Grand County, 8 miles away Left Hand Reservoir, Boulder County, 10 miles away Ypsilon Lake, Larimer County, 11 miles away Lake Dorothy, Boulder County, 12 miles away Shadow Mountain Lake, Grand County, 14 miles away   Public Lands Near Castle Lake: Roosevelt National Forest, Colorado, 25 miles away Golden Gate Canyon State Park, Colorado, 26 miles away Eldorado State Park, Colorado, 27 miles away Rocky Mountain National Park, Estes Park - CO, 11 miles away   Marinas On or Near Castle Lake: Boater's Choice, Grand Lake, 13 miles away Headwaters Marina, Grand Lake, 13 miles away Trail Ridge Marina, Grand Lake, 15 miles away Shadow Mountain Marina and RV, Grand Lake, 15 miles away Beacon Landing Marina, Grand Lake, 16 miles away   Camp Grounds Near Castle Lake: Timberline Group Campground, -blank-, 6 miles away Longs Peak Campground, Larimer County, 6 miles away Glacier Basin Campground, Larimer County, 6 miles away Estes Park Campground, Estes Park, 7 miles away   Hotels Near Castle Lake: Aspen Lodge, Estes Park, 7 miles away Romantic Riversong Inn, Estes Park, 9 miles away Peak To Peak Lodge Inc., Estes Park, 9 miles away Marys Lake Lodge, Estes Park, 9 miles away Alpine Trail Ridge Inn, Estes Park, 9 miles away   Hiking Trails Near Castle Lake: Gourd Lake Trail, Grand County, 6 miles away Mount Audubon Trail, Boulder County, 7 miles away Cascade Trail, Grand County, 8 miles away   Ski Areas Near Castle Lake: Eldora, Colorado, 16 miles away       1600 foot drop, 12 lifts, 53 runs Winter Park, Colorado, 20 miles away       3060 foot drop, 26 lifts, 145 runs SolVista Basin, Colorado, 21 miles away       1000 foot drop, 6 lifts, 37 runs   Whitewater Near Castle Lake: Saint Vrain Creek - North, BoulderCounty, 8 miles away       Class V+ - 13 miles long (Peak to Peak Highway to Buttonrock Preserve) Boulder Creek, BoulderCounty, 14 miles away       Class V - 2.5 miles long (Gun Shy to Jasper Creek) Saint Vrain Creek - South, BoulderCounty, 14 miles away       Class V+ - 5.5 miles long (Ceran St. Vrain Trailhead to Confluence)