I am familiar with and can personally recommend these camps:
“Angeles Crest Christian Camp” in mountains between Palmdale & La Canada.
“Glorieta Camp” near Santa Fe, New Mexico.
“Hartland Christian Camp” in Central California.
“Hume Lake Christian Camp” in Central California.
“Jenness Park”“ in Northern California.
“Life Camp” at Lopez Lake on Central Coast of California.
“Thousand Pines” on Big Bear Mountain (both in Southern California).