The East Fork San Gabriel River Access at Heaton Flat provides trailhead parking and access to a popular 5-mile hiking trail along the river featuring multiple creek crossings and scenic canyon views.

The parking area is located at the end of East Fork Road (6-8 miles from CA-39), though it fills quickly on weekends; an Adventure Pass or America the Beautiful Pass is required.

The trail is best visited November through May and involves wet crossings that may reach knee-deep, so waterproof footwear is recommended.