The best option to get to Multnomah Waterfalls is to drive your own car. This will allow you to visit the other waterfalls and hiking trails around the area as well. From Portland, you can either take the Historic Columbia River Highway or I-84 to reach Multnomah Falls.

McAfee Knob
The best way to reach the trailhead to McAfee Knob is to drive a car. There is limited parking at