The parking lot is half a mile to the trail head. After that it is another 2 miles in to the bathtub, not a difficult hike either. Just a few times where you cross the creek.
It's a slow hike though. Will take between 1.5 and 2 hours.
About a mile and half depending on the way you go, or how long it takes. Took my 4 yr old on the joke he loved it, be prepared to get wet before you get there about 13 different water crossings.
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