While relatively straightforward (it basically goes straight up the Cameron Creek valley), the trail itself is quite overgrown and can be a little tricky to keep track of as you hike it.
From the Three Forks campground, the Cameron Creek trail heads upstream along Cameron Creek. On a map, it looks like a straight shot, but it crosses the creek twice, and despite a relatively low elevation profile, it is tiring since that elevation comes in bursts.
The first mile is easy enough to follow, but soon after crossing Cameron Creek for the first time the trail becomes brushy and overgrown in places. Cross back over Cameron Creek on a footlog after about a mile and continue hiking upstream.
As you hike deeper into the park the trail becomes more overgrown. And gradually, the deep forest begins to be interspersed with open meadows. These are also quite overgrown, and in some sections, the trail is more of a suggestion than actually carved out. After 6.7 miles of hiking, arrive at an unassuming junction with the Grand Pass trail.
Here you can ascend to a gorgeous view from Grand Pass after a strenuous uphill climb, or you can continue straight on. From this junction, the trail becomes the Cameron Pass trail, leading to Cameron Basin and the pass beyond.