Chilao Campground in the national forest provides a peaceful, tree-lined setting with vehicle-accessible sites, picnic tables, and restrooms; sites can accommodate a trailer but typically do not offer hookups. Buckhorn Campground offers shaded, roomy parking areas and basic amenities that make unhitching and setup straightforward for a trailer. Crystal Lake Campground sits beside a mountain lake with established sites and accessible parking; it’s popular for day use and overnight stays, so check size limits and seasonal availability. All three campgrounds are reachable from South San Gabriel and make good bases for hiking, fishing, and scenic drives.