I am not sure ...

It's not too far.I am going to guess around one to two miles. However, I am not sure if there is a trail from natural roots. We went by it on our way to another beach that is super cool as well. So that one may be closer.

This should be no problem with an Enduro.

Yes, you definitely need a 4X4. There are 2 ways to get there. The short way from Samara and the "long way from Samara. The short way requires crossing a river. I have crossed many times and I have also turned around many times bc river is to high. I have had a friend that crossed when to deep and car filled up with water. Not what you want to do. The long way is longer, but you cross the river on a bridge. When leaving Samara, you will pass a gas station on your right outside of town. There is a highway/road on the left, Just before the gas station. Turn here. There is a sign that reads Nosara. Go untill it dead ends. Turn left. There will be a very nice house/compound on the right, down the road. Used to be Mel Gibson's property. You can not see the house from the road but there is a workshop/mill on the grounds. Take the next right past the property. Follow the dirt road to the beach. Road is narrow, bumpy, and muddy in rainy weather. To explain the short way is not as easy due to the many turns. Someone in town may be able to explain. Also, best to go at low tide. Also should leave before high tide and if rains heavily due to river, depending on route. The short way is good but hard to explain bc landmarks are by sight and no signs. Hope this helps!!