Glenn Camp is a backcountry campground located 7 miles up a paved National Scenic Bikeway trail from Highway 39, accessible only by hiking or biking (with special permits available for disabled visitors).

The campground offers 10 primitive tent sites with picnic tables and fire rings along the West Fork San Gabriel River, featuring stream water (must be treated), vault toilets, and several accessible fishing platforms for native trout fishing with catch-and-keep regulations below the second bridge and catch-and-release above.

An Adventure Pass is required for parking at the trailhead, and a California Campfire Permit is needed; sites are first-come, first-served at $5/night year-round.