Open sunrise to sunset. Stay off the trails for 24 hours after a heavy rain.
To reach this trail, use the lot on the Stamford side of the park. Follow a short run on Merriebrook Lane across the bridge, the yellow trailhead will be on your left for the start of the Riverwalk Trail.
There are some tricky rock steps to climb and descend at the start. After that, you're challenged by boulders, rocks, roots and short ups and downs.