There are biking trails remember there are many different trails throughout Arkansas. I've seen trails for mountain biking.
Trails have few pretty bad stretches and couple of steep cliffs, swampy areas, fallen trees, So it would be hard for biking. I haven't seen anyone biking.
Most of the trails you could ride a bike on but I don't think there are any specifically for mountain bikes.
There are walking trails and horse trails. I don't know of any that are set aside for bike use
I am not sure
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