Not for a retreat weekend but a couple of days during the week?
You could try Questhaven in nearby Escondido
"This non-denominational Christian retreat center is nestled among chaparral-covered hills in northern San Diego County. The grounds encompass 640 acres of coastal wilderness traversed by several miles of nature trails offering views of the Pacific Ocean, shaded oak sanctuaries, wayside shrines, seasonal wild flowers and a variety of birds and wildlife"
http://www.questhaven.org/index.asp
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You could try Questhaven in nearby Escondido
"This non-denominational Christian retreat center is nestled among chaparral-covered hills in northern San Diego County. The grounds encompass 640 acres of coastal wilderness traversed by several miles of nature trails offering views of the Pacific Ocean, shaded oak sanctuaries, wayside shrines, seasonal wild flowers and a variety of birds and wildlife"
http://www.questhaven.org/index.asp
References :
http://www.questhaven.org