Grant Lake   Be the first to submit input for Grant Lake. If you have info on Grant Lake, San Luis Obispo County, California please submit it here to improve this web site.          These outdoors activities are available near Grant Lake.   Hotels Near Grant Lake: Best Western Kettleman City Inn & Suites, Kettleman City, 25 miles away Super 8 Kettleman City, Kettleman City, 26 miles away Relax Inn, Paso Robles, 27 miles away Days Inn Lost Hills, Lost Hills, 34 miles away Holiday Inn Express Hotel & Suites ATASCADERO, Atascadero, 35 miles away   Hiking Trails Near Grant Lake: Fernandez Trail, San Luis Obispo County, 16 miles away       2.6 hiking miles, 606 feet elevation difference