It's a very short walk from the trailhead to Champion Beach. Along the way, you'll cross a couple of bridges and pass through typical lush Middle Fork forest. The big attraction is the beach, though. It's a big part of the river with beautiful green water and huge rocks. There's lots of room to spread out and tons of trails that lead away from the main beach.
Map & Directions
From Seattle, drive east on I-90 to exit 34. Turn left onto 468th Ave SE and follow it 0.6 miles to the junction with SE Middle Fork Road. Turn right and follow SE Middle Fork Road 2.1 miles, until reaching a fork. Stay to the right on Lake Dorothy Road, and pass the Granite Creek Connector trailhead 0.7 miles later, on your right. 1.8 miles farther, just the Granite Creek trailhead, you sill see the parking area and trailhead on the lefthand side.